memory: ti-gpmc: Alloc per driver private struct

Driver uses dev_get_priv() but never allocates it in its
declaration leading to various crashes. Fix this by explicitly
allocating the storage.

Fixes: 9b0b5648d6e4 ("memory: Add TI GPMC driver")
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
1 file changed