drm/i915/psr: Add intel_psr2_panic_force_full_update

When the panic handler is called, configure the psr to send the full
framebuffer to the monitor, otherwise the panic screen is only
partially visible.

Signed-off-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://lore.kernel.org/r/20250624091501.257661-12-jfalempe@redhat.com


Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>