kernel: improve dma ops inlining patches

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt@37790 3c298f89-4303-0410-b956-a3cf2f4a3e73
kernel: fix a small #ifdef bug in the noncoherent dma check rework

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt@37791 3c298f89-4303-0410-b956-a3cf2f4a3e73