dmaengine: qcom: gpi: move read_lock_bh to read_lock in tasklet

it is unnecessary to call read_lock_bh in a tasklet.

Signed-off-by: Tuo Cao <91tuocao@gmail.com>
Link: https://lore.kernel.org/r/20220814131323.7029-1-91tuocao@gmail.com


Signed-off-by: Vinod Koul <vkoul@kernel.org>