fpga: constify to fix build warning

Fix compiler warning:

cmd_fpga.c:318: warning: passing argument 3 of 'fit_image_get_data'
from incompatible pointer type

Adding the needed 'const' here entails a whole bunch of additonal
changes all over the FPGA code.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Andre Schwarz <andre.schwarz@matrix-vision.de>
Cc: Murray Jensen <Murray.Jensen@csiro.au>
Acked-by: Andre Schwarz<andre.schwarz@matrix-vision.de>
diff --git a/board/hymod/bsp.c b/board/hymod/bsp.c
index 9a92941..2cd3707 100644
--- a/board/hymod/bsp.c
+++ b/board/hymod/bsp.c
@@ -75,14 +75,14 @@
  */
 
 int
-fpga_load (int mezz, uchar *addr, ulong size)
+fpga_load(int mezz, const uchar *addr, ulong size)
 {
 	hymod_conf_t *cp = &gd->bd->bi_hymod_conf;
 	xlx_info_t *fp;
 	xlx_iopins_t *fpgaio;
 	volatile uchar *fpgabase;
 	volatile uint cnt;
-	uchar *eaddr = addr + size;
+	const uchar *eaddr = addr + size;
 	int result;
 
 	if (mezz)
diff --git a/board/matrix_vision/mergerbox/fpga.c b/board/matrix_vision/mergerbox/fpga.c
index 673bc2c..021e9c4 100644
--- a/board/matrix_vision/mergerbox/fpga.c
+++ b/board/matrix_vision/mergerbox/fpga.c
@@ -161,7 +161,7 @@
 	return 0;
 }
 
-int fpga_wr_fn(void *buf, size_t len, int flush, int cookie)
+int fpga_wr_fn(const void *buf, size_t len, int flush, int cookie)
 {
 	unsigned char *data = (unsigned char *) buf;
 	int i;
diff --git a/board/matrix_vision/mergerbox/fpga.h b/board/matrix_vision/mergerbox/fpga.h
index fccff9f..89f879a 100644
--- a/board/matrix_vision/mergerbox/fpga.h
+++ b/board/matrix_vision/mergerbox/fpga.h
@@ -26,5 +26,5 @@
 extern int fpga_config_fn(int assert, int flush, int cookie);
 extern int fpga_done_fn(int cookie);
 extern int fpga_clk_fn(int assert_clk, int flush, int cookie);
-extern int fpga_wr_fn(void *buf, size_t len, int flush, int cookie);
+extern int fpga_wr_fn(const void *buf, size_t len, int flush, int cookie);
 extern int fpga_null_fn(int cookie);
diff --git a/board/matrix_vision/mvbc_p/fpga.c b/board/matrix_vision/mvbc_p/fpga.c
index 3ed46fe..6ce96ba 100644
--- a/board/matrix_vision/mvbc_p/fpga.c
+++ b/board/matrix_vision/mvbc_p/fpga.c
@@ -160,7 +160,7 @@
 	return 0;
 }
 
-int fpga_wr_fn(void *buf, size_t len, int flush, int cookie)
+int fpga_wr_fn(const void *buf, size_t len, int flush, int cookie)
 {
 	unsigned char *data = (unsigned char *) buf;
 	int i;
diff --git a/board/matrix_vision/mvbc_p/fpga.h b/board/matrix_vision/mvbc_p/fpga.h
index 3723073..8f74a00 100644
--- a/board/matrix_vision/mvbc_p/fpga.h
+++ b/board/matrix_vision/mvbc_p/fpga.h
@@ -30,5 +30,5 @@
 extern int fpga_config_fn(int assert, int flush, int cookie);
 extern int fpga_done_fn(int cookie);
 extern int fpga_clk_fn(int assert_clk, int flush, int cookie);
-extern int fpga_wr_fn(void *buf, size_t len, int flush, int cookie);
+extern int fpga_wr_fn(const void *buf, size_t len, int flush, int cookie);
 extern int fpga_null_fn(int cookie);
diff --git a/board/matrix_vision/mvblm7/fpga.c b/board/matrix_vision/mvblm7/fpga.c
index 7b03d6f..dc5a738 100644
--- a/board/matrix_vision/mvblm7/fpga.c
+++ b/board/matrix_vision/mvblm7/fpga.c
@@ -172,7 +172,7 @@
 	return 0;
 }
 
-int fpga_wr_fn(void *buf, size_t len, int flush, int cookie)
+int fpga_wr_fn(const void *buf, size_t len, int flush, int cookie)
 {
 	unsigned char *data = (unsigned char *) buf;
 	int i;
diff --git a/board/matrix_vision/mvblm7/fpga.h b/board/matrix_vision/mvblm7/fpga.h
index 19277eb..f422f20 100644
--- a/board/matrix_vision/mvblm7/fpga.h
+++ b/board/matrix_vision/mvblm7/fpga.h
@@ -30,5 +30,5 @@
 extern int fpga_config_fn(int assert, int flush, int cookie);
 extern int fpga_done_fn(int cookie);
 extern int fpga_clk_fn(int assert_clk, int flush, int cookie);
-extern int fpga_wr_fn(void *buf, size_t len, int flush, int cookie);
+extern int fpga_wr_fn(const void *buf, size_t len, int flush, int cookie);
 extern int fpga_null_fn(int cookie);