treewide: simplify Kconfig dependencies for removed archs

A lot of Kconfig symbols have architecture specific dependencies.
In those cases that depend on architectures we have already removed,
they can be omitted.

Acked-by: Kalle Valo <kvalo@codeaurora.org>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig
index 763ee50..f16aad3 100644
--- a/drivers/pwm/Kconfig
+++ b/drivers/pwm/Kconfig
@@ -43,7 +43,7 @@
 
 config PWM_ATMEL
 	tristate "Atmel PWM support"
-	depends on ARCH_AT91 || AVR32
+	depends on ARCH_AT91
 	help
 	  Generic PWM framework driver for Atmel SoC.