regcache: Use sort()'s default swap() implementation

Use sort()'s default swap() implementation and remove the custom
regcache_defaults_swap() function.

Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Link: https://patch.msgid.link/20250428061318.88859-2-thorsten.blum@linux.dev
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: toblux

drivers/base/regmap/regcache.c

@@ -34,21 +34,10 @@ static int regcache_defaults_cmp(const void *a, const void *b)
 		return 0;
 }
 
-static void regcache_defaults_swap(void *a, void *b, int size)
-{
-	struct reg_default *x = a;
-	struct reg_default *y = b;
-	struct reg_default tmp;
-
-	tmp = *x;
-	*x = *y;
-	*y = tmp;
-}
-
 void regcache_sort_defaults(struct reg_default *defaults, unsigned int ndefaults)
 {
 	sort(defaults, ndefaults, sizeof(*defaults),
-	     regcache_defaults_cmp, regcache_defaults_swap);
+	     regcache_defaults_cmp, NULL);
 }
 EXPORT_SYMBOL_GPL(regcache_sort_defaults);