fs: Kconfig: Add a separate option for FS_CRAMFS

Rather than using CMD_CRAMFS for both the filesystem and its command, we
should have a separate option for each. This allows us to enable CRAMFS
support without the command, if desired, which reduces U-Boot's size
slightly.

Signed-off-by: Simon Glass <sjg@chromium.org>
[trini: imply FS_CRAMFS for keymile]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/powerpc/cpu/mpc83xx/Kconfig b/arch/powerpc/cpu/mpc83xx/Kconfig
index 4890e13..7ebc27c 100644
--- a/arch/powerpc/cpu/mpc83xx/Kconfig
+++ b/arch/powerpc/cpu/mpc83xx/Kconfig
@@ -65,14 +65,17 @@
 config TARGET_KM8360
 	bool "Support km8360"
 	imply CMD_CRAMFS
+	imply FS_CRAMFS
 
 config TARGET_SUVD3
 	bool "Support suvd3"
 	imply CMD_CRAMFS
+	imply FS_CRAMFS
 
 config TARGET_TUXX1
 	bool "Support tuxx1"
 	imply CMD_CRAMFS
+	imply FS_CRAMFS
 
 config TARGET_TQM834X
 	bool "Support TQM834x"