cnss2: Do runtime PM resume before time sync update

When time sync update happens, it has to make sure PCIe link
is resumed so that it is able to access the time sync related
registers.

Change-Id: Iaa44fef28f9b9f85bba86a795bf56fee04c4bd88
Signed-off-by: Yue Ma <yuem@codeaurora.org>