Rename TEXT_BASE into CONFIG_SYS_TEXT_BASE

The change is currently needed to be able to remove the board
configuration scripting from the top level Makefile and replace it by
a simple, table driven script.

Moving this configuration setting into the "CONFIG_*" name space is
also desirable because it is needed if we ever should move forward to
a Kconfig driven configuration system.

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/board/logicpd/am3517evm/config.mk b/board/logicpd/am3517evm/config.mk
index f7a35ce..102d32b 100644
--- a/board/logicpd/am3517evm/config.mk
+++ b/board/logicpd/am3517evm/config.mk
@@ -27,4 +27,4 @@
 # (mem base + reserved)
 
 # For use with external or internal boots.
-TEXT_BASE = 0x80e80000
+CONFIG_SYS_TEXT_BASE = 0x80e80000
diff --git a/board/logicpd/imx27lite/config.mk b/board/logicpd/imx27lite/config.mk
index 2f9c4e6..7f22154 100644
--- a/board/logicpd/imx27lite/config.mk
+++ b/board/logicpd/imx27lite/config.mk
@@ -1 +1 @@
-TEXT_BASE = 0xc0000000
+CONFIG_SYS_TEXT_BASE = 0xc0000000
diff --git a/board/logicpd/imx31_litekit/config.mk b/board/logicpd/imx31_litekit/config.mk
index d34dc02..0131edf 100644
--- a/board/logicpd/imx31_litekit/config.mk
+++ b/board/logicpd/imx31_litekit/config.mk
@@ -1 +1 @@
-TEXT_BASE = 0x87f00000
+CONFIG_SYS_TEXT_BASE = 0x87f00000
diff --git a/board/logicpd/zoom1/config.mk b/board/logicpd/zoom1/config.mk
index 7347497..39a94dc 100644
--- a/board/logicpd/zoom1/config.mk
+++ b/board/logicpd/zoom1/config.mk
@@ -30,4 +30,4 @@
 # (mem base + reserved)
 
 # For use with external or internal boots.
-TEXT_BASE = 0x80e80000
+CONFIG_SYS_TEXT_BASE = 0x80e80000
diff --git a/board/logicpd/zoom2/config.mk b/board/logicpd/zoom2/config.mk
index 33f394b..8a8adc7 100644
--- a/board/logicpd/zoom2/config.mk
+++ b/board/logicpd/zoom2/config.mk
@@ -30,4 +30,4 @@
 # (mem base + reserved)
 
 # For use with external or internal boots.
-TEXT_BASE = 0x80e80000
+CONFIG_SYS_TEXT_BASE = 0x80e80000