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/IVML24.h b/include/configs/IVML24.h
index 1a4924e..5cc8e9a 100644
--- a/include/configs/IVML24.h
+++ b/include/configs/IVML24.h
@@ -36,6 +36,8 @@
 #define CONFIG_MPC860		1	/* This is a MPC860 CPU		*/
 #define CONFIG_IVML24		1	/* ...on a IVML24 board		*/
 
+#define	CONFIG_SYS_TEXT_BASE	0xFF000000
+
 #if defined (CONFIG_IVML24_16M)
 # define CONFIG_IDENT_STRING     " IVML24"
 #elif defined (CONFIG_IVML24_32M)