Revert "MIPS: Alchemy: fix dbdma2"

stable inclusion
from stable-v5.10.194
commit 268e9225227756860df52a520f6c5f3994a7a1ba
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I9399M

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=268e9225227756860df52a520f6c5f3994a7a1ba



--------------------------------

This reverts commit 619672bf2d04cdc1bc3925defd0312c2ef11e5d0 which is
commit 2d645604 upstream.

It breaks the build, so should be dropped.

Reported-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/5b30ff73-46cb-1d1e-3823-f175dbfbd91b@roeck-us.net


Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: sanglipeng <sanglipeng1@jd.com>