leds: Rename simple directory to simatic

The drivers contained in this directory are not simplistic.

Signed-off-by: Lee Jones <lee@kernel.org>

drivers/leds/Kconfig

@@ -1015,7 +1015,7 @@ source "drivers/leds/rgb/Kconfig"
 comment "LED Triggers"
 source "drivers/leds/trigger/Kconfig"
 
-comment "Simple LED drivers"
-source "drivers/leds/simple/Kconfig"
+comment "Simatic LED drivers"
+source "drivers/leds/simatic/Kconfig"
 
 endif # NEW_LEDS

drivers/leds/Makefile

@@ -121,5 +121,5 @@ obj-$(CONFIG_LEDS_TRIGGERS)		+= trigger/
 # LED Blink
 obj-y					+= blink/
 
-# Simple LED drivers
-obj-y					+= simple/
+# Simatic LED drivers
+obj-y					+= simatic/