powerpc/40x: Add cuboot wrapper for Acadia board

This adds a cuboot wrapper for the AMCC PowerPC 405EZ Acadia board.  The
clocking code is derived from U-Boot, originally written by Stefan Roese.

Signed-off-by: Josh Boyer <jwboyer@linux.ibm.com>
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index aac1406..4760365 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -68,7 +68,8 @@
 		fixed-head.S ep88xc.c ep405.c cuboot-c2k.c \
 		cuboot-katmai.c cuboot-rainier.c redboot-8xx.c ep8248e.c \
 		cuboot-warp.c cuboot-85xx-cpm2.c cuboot-yosemite.c simpleboot.c \
-		virtex405-head.S virtex.c redboot-83xx.c cuboot-sam440ep.c
+		virtex405-head.S virtex.c redboot-83xx.c cuboot-sam440ep.c \
+		cuboot-acadia.c
 src-boot := $(src-wlib) $(src-plat) empty.c
 
 src-boot := $(addprefix $(obj)/, $(src-boot))
@@ -211,6 +212,7 @@
 # Board ports in arch/powerpc/platform/40x/Kconfig
 image-$(CONFIG_EP405)			+= dtbImage.ep405
 image-$(CONFIG_WALNUT)			+= treeImage.walnut
+image-$(CONFIG_ACADIA)			+= cuImage.acadia
 
 # Board ports in arch/powerpc/platform/44x/Kconfig
 image-$(CONFIG_EBONY)			+= treeImage.ebony cuImage.ebony