Fix for Void function returning value in sbc35-a9g20

Void function was returning 0 in the m41t94 rtc driver.
This makes it similar to m41t62 rtc driver.

Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>

drivers/rtc/m41t94.c

@@ -120,5 +120,4 @@ void rtc_reset(void)
 	 * Could not be tested as the reset pin is not wired on
 	 * the sbc35-ag20 board
 	 */
-	return 0;
 }