[ARM] i.MX6Q SRAM device node added in device tree.

Signed-off-by: Jimmy Durand Wesolowski <jimmy.durand-wesolowski@openwide.fr>
[ARM] i.MX6Q SRAM device node added in device tree.

Signed-off-by: Jimmy Durand Wesolowski <jimmy.durand-wesolowski@openwide.fr>