drm/i915/display: Use original src in psr2 sel fetch area calculation

drm_plane_state->src is modified when offset is calculated:

before calculation:
src.x1 = 8192, src.y1 = 8192

after calculation (pitch = 65536, cpp = 4, alignment = 262144)
src.x1 = 8192, src.y1 = 0, offset = 0x20000000

Damage clips are relative to original coodrdinates provided by
user-space. To compare these against src coordinates we need to use
original coordinates as provided by user-space. These can be obtained
by using drm_plane_state_src.
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220823112920.352563-3-jouni.hogander@intel.comReviewed-by: Mika Kahola <mika.kahola@intel.com>

drivers/gpu/drm/i915/display/intel_psr.c

@@ -1768,7 +1768,8 @@ int intel_psr2_sel_fetch_update(struct intel_atomic_state *state,
 			continue;
 		}
 
-		drm_rect_fp_to_int(&src, &new_plane_state->uapi.src);
+		src = drm_plane_state_src(&new_plane_state->uapi);
+		drm_rect_fp_to_int(&src, &src);
 
 		drm_atomic_helper_damage_iter_init(&iter,
 						   &old_plane_state->uapi,