Fix the following coccinelle warnings:

sound/ppc/pmac.c:729:57-58: WARNING: sum of probable bitmasks, consider |
sound/ppc/pmac.c:229:37-38: WARNING: sum of probable bitmasks, consider |
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Samuel Zou <zou_wei@huawei.com>
Link: https://lore.kernel.org/r/1588823647-12480-1-git-send-email-zou_wei@huawei.comSigned-off-by: Takashi Iwai <tiwai@suse.de>