drm/radeon/radeon_pm: Move 'radeon_pm_acpi_event_handler' prototype into shared header

Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/radeon/radeon_pm.c:74:6: warning: no previous prototype for ‘radeon_pm_acpi_event_handler’ [-Wmissing-prototypes]
 74 | void radeon_pm_acpi_event_handler(struct radeon_device *rdev)
 | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~

Cc: Alex Deucher <[email protected]>
Cc: "Christian König" <[email protected]>
Cc: David Airlie <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: Sumit Semwal <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Lee Jones <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>

0 files changed, 0 insertions, 0 deletions