arm64: edac: Add workaround for using cti to trigger pmu irq

In MSM8994-V1, for unknown reasons the pmu percpu interrupt was
incorrectly connected to the corresponding CPU in the other cluster.
To workaround this problem, it was decided that the cti could be used
to trigger the percpu pmu interrupt to the right cpu which actually
caused the event and can handle it.
This patch implements this workaround.

Change-Id: I732ad77ed2529a54b85c51b3fadcc53d93d70279
Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>