drm/i915/xe2lpd: Handle port AUX interrupts

Differently from previous version, Xe2_LPD groups all port AUX interrupt
bits into PICA interrupt registers.

While at it, drop some trailing newlines.

BSpec: 68958, 69697
Signed-off-by: Gustavo Sousa <gustavo.sousa@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230919192128.2045154-13-lucas.demarchi@intel.com