modem: Add PCIe event stats into bugreport.

We have a new syfs file to track the retries for PCIe linkdowns
and CPL timeouts. We are adding it to the dump_modem script to
export it as part of the bugreport.

Bug: 284947288
Change-Id: I42d06ab1e479db0a7cf7b553191bf8407b3bd32f
Signed-off-by: Mahesh Kallelil <kallelil@google.com>
2 files changed