msm: pcie: improve logging for AER

Improve the IPC logging for Advanced Error Reporting (AER)
to have the option for logging frequency and add the
counters to track various types of PCIe errors.

Change-Id: I5e731997e3a895ecc9e996b8e45317610cde5f0a
Signed-off-by: Tony Truong <truong@codeaurora.org>