dt-bindings: pinctrl: Correct the header guard of mt6795-pinfunc.h

Rename the header guard of mt6795-pinfunc.h from __DTS_MT8173_PINFUNC_H to
__DTS_MT6795_PINFUNC_H what corresponding with the file name.

Fixes: 81557a71564a ("dt-bindings: pinctrl: Add MediaTek MT6795 pinctrl bindings")
Signed-off-by: Wei Li <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Linus Walleij <[e-mail]>

include/dt-bindings/pinctrl/mt6795-pinfunc.h

···
  * Author: AngeloGioacchino Del Regno <[e-mail]>
  */
 
-#ifndef __DTS_MT8173_PINFUNC_H
-#define __DTS_MT8173_PINFUNC_H
+#ifndef __DTS_MT6795_PINFUNC_H
+#define __DTS_MT6795_PINFUNC_H
 
 #include <dt-bindings/pinctrl/mt65xx.h>