pwm: Remove depends on AVR32

AVR32 is gone, so no more need to depend on it.
Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

drivers/pwm/Kconfig

@@ -43,7 +43,7 @@ config PWM_AB8500
 
 config PWM_ATMEL
 	tristate "Atmel PWM support"
-	depends on ARCH_AT91 || AVR32
+	depends on ARCH_AT91
 	help
 	  Generic PWM framework driver for Atmel SoC.