powerpc/corenet32: enable DMA in defconfig
powerpc/corenet32: enable DMA in defconfig

By default we enable DMA(CONFIG_FSL_DMA) support
which are needed on P2041RDB, P3041DS, P4080DS,
B4860QDS, etc.

Signed-off-by: Yuan Yao <8590e40ef5cb6355794d7302977c18b721b9b0a7@freescale.com>
Signed-off-by: Scott Wood <b77916c2feab81a70245e7b5671f4f02730ebf64@freescale.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs