MLK-11801 imx: mx7d: resolve conflicts with A7 and M4

M4 will use UART2, and RDC is configured that kernel can not
access. If still enable it, kernel will panic.

To validation board, disable gpio-keys, since m4 will use volume keys.

Signed-off-by: Peng Fan <Peng.Fan@freescale.com>
2 files changed