warp: Adjust CONFIG_SYS_DFU_DATA_BUF_SIZE

Adjust CONFIG_SYS_DFU_DATA_BUF_SIZE in order to avoid the following error
when running the dfu command:
=> dfu 0 mmc 0
dfu_get_buf: Could not memalign 0x2000000 bytes

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
1 file changed