drm/i915/psr: Rename psr_force_hw_tracking_exit as intel_psr_force_update

psr_force_hw_tracking_exit is misleading name as it is used for PSR1, PSR2
HW tracking and PSR2 selective fetch. Due to this rename it as
intel_psr_force_update.

Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250213064804.2077127-3-jouni.hogander@intel.com