util: Getting util_align_npot to be same with ALIGN_NPOT so it can be merged latter

Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38431>

src/util/u_math.h

@@ -707,9 +707,8 @@ align_uintptr(uintptr_t value, uintptr_t alignment)
 static inline size_t
 util_align_npot(size_t value, size_t alignment)
 {
-   if (value % alignment)
-      return value + (alignment - (value % alignment));
-   return value;
+   assert(alignment > 0);
+   return (value + alignment - 1) / alignment * alignment;
 }
 
 static inline size_t