Convert CONFIG_FSL_CADMUS to Kconfig

This converts the following to Kconfig:
   CONFIG_FSL_CADMUS

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/board/freescale/mpc8548cds/Kconfig b/board/freescale/mpc8548cds/Kconfig
index bd9153b..723ead5 100644
--- a/board/freescale/mpc8548cds/Kconfig
+++ b/board/freescale/mpc8548cds/Kconfig
@@ -3,6 +3,9 @@
 config PCI1
 	def_bool y
 
+config FSL_CADMUS
+	def_bool y
+
 config SYS_BOARD
 	default "mpc8548cds"