powerpc:mpc85xx: Add ifc nand boot support for TPL/SPL

Using the TPL method for nand boot by sram was already
supported. Here add some code for mpc85xx ifc nand boot.

	- For ifc, elbc, esdhc, espi, all need the SPL without
	section .resetvec.
	- Use a clear function name for nand spl boot.
	- Add CONFIG_SPL_DRIVERS_MISC_SUPPORT to compile the fsl_ifc.c
	in spl/Makefile;

Signed-off-by: Po Liu <Po.Liu@freescale.com>
Acked-by: Scott Wood <scottwood@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
diff --git a/spl/Makefile b/spl/Makefile
index 5e5472d..ceb425b 100644
--- a/spl/Makefile
+++ b/spl/Makefile
@@ -72,6 +72,7 @@
 LIBS-$(CONFIG_SPL_POWER_SUPPORT) += drivers/power/ \
 	drivers/power/pmic/
 LIBS-$(if $(CONFIG_CMD_NAND),$(CONFIG_SPL_NAND_SUPPORT)) += drivers/mtd/nand/
+LIBS-$(CONFIG_SPL_DRIVERS_MISC_SUPPORT) += drivers/misc/
 LIBS-$(CONFIG_SPL_ONENAND_SUPPORT) += drivers/mtd/onenand/
 LIBS-$(CONFIG_SPL_DMA_SUPPORT) += drivers/dma/
 LIBS-$(CONFIG_SPL_POST_MEM_SUPPORT) += post/drivers/