[][MAC80211][wed][add dma mask limitation for the board w/ >= 4GB dram]

[Description]
Add dma mask limitation and add GFP_DMA32 flag when alloc memory for the board w/ >= 4GB dram

[Release-log]
N/A


Change-Id: I5c594b7187118d95547fc989a767f72a11bf8a51
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/7882515
1 file changed