powerpc/44x: Add explicit support for AMCC Glacier

Add explicit support for the AMCC Glacier eval board to Kconfig and the
ppc44x_simple file.  Also removes the cayonlands compatible entry from the
DTS file.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
diff --git a/arch/powerpc/platforms/44x/ppc44x_simple.c b/arch/powerpc/platforms/44x/ppc44x_simple.c
index 32b0535..1c064b2 100644
--- a/arch/powerpc/platforms/44x/ppc44x_simple.c
+++ b/arch/powerpc/platforms/44x/ppc44x_simple.c
@@ -52,6 +52,7 @@
 static char *board[] __initdata = {
 	"amcc,bamboo",
 	"amcc,cayonlands",
+	"amcc,glacier",
 	"ibm,ebony",
 	"amcc,katmai",
 	"amcc,rainier",