Merge branches 'backport/ltsi-3.4.25/pfc-3', 'backport/ltsi-3.4.25/r-car-drm-1', 'backport/ltsi-3.4.25/i2c-rcar-1' and 'backport/ltsi-3.4.25/intc-external-irq-1' into backport/ltsi-3.4.25/m2-base-1