nxp: Finish migration of SYS_FSL_IFC_BANK_COUNT to Kconfig

As this is used on both ARM and PowerPC platforms, this needs to be
asked in arch/Kconfig.nxp.  Set the PowerPC defaults based on
arch/powerpc/include/asm/config_mpc85xx.h and remove the default set in
drivers/mtd/nand/raw/fsl_ifc_nand.c

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/Kconfig.nxp b/arch/Kconfig.nxp
index f492b04..645b4ce 100644
--- a/arch/Kconfig.nxp
+++ b/arch/Kconfig.nxp
@@ -256,6 +256,20 @@
 config SYS_FSL_IFC_BE
 	bool
 
+config SYS_FSL_IFC_BANK_COUNT
+	int "Maximum banks of Integrated flash controller"
+	depends on ARCH_LS1043A || ARCH_LS1046A || ARCH_LS2080A || \
+		ARCH_LS1088A || ARCH_LS1021A || ARCH_B4860 || ARCH_B4420 || \
+		ARCH_T4240 || ARCH_T1040 || ARCH_T1042 || ARCH_T1024 || \
+		ARCH_T2080 || ARCH_C29X || ARCH_P1010 || ARCH_BSC9131 || \
+		ARCH_BSC9132
+	default 3 if ARCH_BSC9131 || ARCH_BSC9132
+	default 4 if ARCH_LS1043A || ARCH_LS1046A || ARCH_B4860 || \
+			ARCH_B4420 || ARCH_P1010
+	default 8 if ARCH_LS2080A || ARCH_LS1088A || ARCH_LS1021A || \
+			ARCH_T4240 || ARCH_T1040 || ARCH_T1042 || \
+			ARCH_T1024 || ARCH_T2080 || ARCH_C29X
+
 config FSL_QIXIS
 	bool "Enable QIXIS support"
 	depends on PPC || ARCH_LS1021A || FSL_LSCH2 || FSL_LSCH3