Driver/IFC: Move Freescale IFC driver to a common driver

Freescale IFC controller has been used for mpc8xxx. It will be used
for ARM-based SoC as well. This patch moves the driver to driver/misc
and fix the header file includes.

Signed-off-by: York Sun <yorksun@freescale.com>
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index d8ff9c6..c77e40a 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -20,3 +20,4 @@
 obj-$(CONFIG_PDSP188x) += pdsp188x.o
 obj-$(CONFIG_STATUS_LED) += status_led.o
 obj-$(CONFIG_TWL4030_LED) += twl4030_led.o
+obj-$(CONFIG_FSL_IFC) += fsl_ifc.o