powerpc/44x: Migrate Sequoia support to ppc44x_simple

Migrate the AMCC Sequoia board to use the ppc44x_simple platform file.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
diff --git a/arch/powerpc/platforms/44x/Kconfig b/arch/powerpc/platforms/44x/Kconfig
index 89e7f1f..84e2a70 100644
--- a/arch/powerpc/platforms/44x/Kconfig
+++ b/arch/powerpc/platforms/44x/Kconfig
@@ -31,6 +31,7 @@
 	bool "Sequoia"
 	depends on 44x
 	default n
+	select PPC44x_SIMPLE
 	select 440EPX
 	help
 	  This option enables support for the AMCC PPC440EPX evaluation board.