Makefile: move all Power Architecture boards into boards.cfg

Clean up Makefile, and drop a lot of the config.mk files on the way.

We now also automatically pick all boards that are listed in
boards.cfg (and with all configurations), so we can drop the redundant
entries from MAKEALL to avoid building these twice.

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/include/configs/R360MPI.h b/include/configs/R360MPI.h
index 830f4bc..586f1bb 100644
--- a/include/configs/R360MPI.h
+++ b/include/configs/R360MPI.h
@@ -36,6 +36,8 @@
 #define CONFIG_MPC823		1	/* This is a MPC823 CPU		*/
 #define CONFIG_R360MPI		1
 
+#define	CONFIG_SYS_TEXT_BASE	0x40000000
+
 #define CONFIG_LCD
 #undef  CONFIG_EDT32F10
 #define CONFIG_SHARP_LQ057Q3DC02