PPChameleonEVB and CATcenter need a custom linker script

These boards use an embedded environment, which is not supported by the
generic arch/powerpc/cpu/ppc4xx/u-boot.lds script.

The breakage was introduced by commit 2cd95a2 "ppc4xx: Remove board
specific linker scripts from most PPC4xx boards"

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Stefan Roese <sr@denx.de>
Cc: Andrea Marson <andrea.marson@dave-tech.it>
Acked-by: Stefan Roese <sr@denx.de>
diff --git a/include/configs/PPChameleonEVB.h b/include/configs/PPChameleonEVB.h
index a14bd0e..195925a 100644
--- a/include/configs/PPChameleonEVB.h
+++ b/include/configs/PPChameleonEVB.h
@@ -76,6 +76,7 @@
 #define CONFIG_PPCHAMELEONEVB	1	/* ...on a PPChameleonEVB board */
 
 #define	CONFIG_SYS_TEXT_BASE	0xFFFB0000	/* Reserve 320 kB for Monitor */
+#define CONFIG_SYS_LDSCRIPT	"board/dave/PPChameleonEVB/u-boot.lds"
 
 #define CONFIG_BOARD_EARLY_INIT_F 1	/* call board_early_init_f()	*/
 #define CONFIG_MISC_INIT_R	1	/* call misc_init_r()		*/