mx53evk: Remove unused get_board_rev function

No board information is passed for MX53EVK, so remove get_board_rev function.

Cc: Jason Liu <r64343@freescale.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Jason Liu <r64343@freescale.com>
2 files changed