[MIPS] Move CFE code into arch/mips/fw/cfe

Move the platform independent part of the CFE code to arch/mips/fw/cfe from
arch/mips/sibyte/cfe.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 90b409d..4863494 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -688,6 +688,9 @@
 config BOOT_RAW
 	bool
 
+config CFE
+	bool
+
 config DMA_COHERENT
 	bool