The default partitions are missing in MX53 SPI NOR MTD.
It's because spi nor driver and mx53 msl include different
header files. It causes struct definitions are different.
For i.MX SPI nor driver, need to use asm/mach/flash.h by
aligning with NAND driver.
Signed-off-by: Lily Zhang <r58066@freescale.com>