tma525c: avoid watchdog sending i2c command if PM is suspended

We should avoid watchdog send i2c commands if PM is suspended to avoid
any unexpected HW Reset triggered.

Bug: 329604457
Test: Manaully trigger suspending PM when watchdog is running, to verify
there's no unexpected behavior triggered.
Change-Id: I73aee9f30bb781ca65eaf0cdf44c1fa58cc2d84e
Merged-In: I73aee9f30bb781ca65eaf0cdf44c1fa58cc2d84e
Signed-off-by: Simon Wei <jentsewei@google.com>
(cherry picked from commit 8e9df12d2949b075578ab55e7de796a6f567a167)