soc: hisilicon: kunpeng_hccs: replace MAILBOX dependency with PCC

mainline inclusion
from mainline-v6.9-rc1
commit 95d6333e0622dd5ca32c7832a015ae24f56d1ad2
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I9UY3Z
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=95d6333e0622dd5ca32c7832a015ae24f56d1ad2



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The kunpeng_hccs driver depends on the Platform Communication Channel
Driver. If the PCC driver is not enabled, this driver will be failed
to probe. And since the PCC driver depends on the MAILBOX, replace
the MAILBOX dependency with the PCC.

Signed-off-by: Huisong Li <lihuisong@huawei.com>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>