drm/amd/display: Remove compiler warning

Tested-by: NDaniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: NAric Cyr <Aric.Cyr@amd.com>
Acked-by: NRodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: NCruise Hung <Cruise.Hung@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/include/fixed31_32.h

@@ -322,7 +322,7 @@ struct fixed31_32 dc_fixpt_sqr(struct fixed31_32 arg);
  */
 static inline struct fixed31_32 dc_fixpt_div_int(struct fixed31_32 arg1, long long arg2)
 {
-	return dc_fixpt_from_fraction(arg1.value, dc_fixpt_from_int(arg2).value);
+	return dc_fixpt_from_fraction(arg1.value, dc_fixpt_from_int((int)arg2).value);
 }
 
 /*