core: fix MSA build

modules/core/include/opencv2/core/hal/intrin_msa.hpp

@@ -1789,10 +1789,20 @@ inline typename _Tp::lane_type v_extract_n(const _Tp& a)
     return v_rotate_right<i>(a).get0();
 }
 
-template<int i, typename _Tp>
-inline _Tp v_broadcast_element(const _Tp& a)
+template<int i>
+inline v_uint32x4 v_broadcast_element(const v_uint32x4& a)
+{
+    return v_setall_u32(v_extract_n<i>(a));
+}
+template<int i>
+inline v_int32x4 v_broadcast_element(const v_int32x4& a)
+{
+    return v_setall_s32(v_extract_n<i>(a));
+}
+template<int i>
+inline v_float32x4 v_broadcast_element(const v_float32x4& a)
 {
-    return _Tp::all(v_extract_n<i>(a));
+    return v_setall_f32(v_extract_n<i>(a));
 }
 
 ////// FP16 suport ///////