fix(imx8ulp): increase the mmap region num

the mmap region num is not enough for the mmap regions,
so increase it, increase the xlat_table num too.

Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Change-Id: I2a2515b291e96cc12398a2c2c526351342811fff
1 file changed