[][SBC][MT7988][Add reserved memory for BL32]

[Description]
Add reserved memory for BL32, align reserved memory size
for SRAM from ATF, (TZRAM_SIZE + TZRAM2_SIZE) =
0x40000(BL31) + 0x10000(BL32) = 0x50000

[Release-log]
N/A

Change-Id: Icc6bb0af2d712fdcb835bcfec90b8902392c6482
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/7272375
1 file changed