status_led: Kconfig migration

Move all of the status LED feature to drivers/led/Kconfig.
The LED status definitions were moved from the board configuration
files to the defconfig files.

TBD: Move all of the definitions in the include/status_led.h to the
relevant board's defconfig files.

Tested boards: CL-SOM-AM57x, CM-T335

Signed-off-by: Uri Mashiach <uri.mashiach@compulab.co.il>
diff --git a/board/compulab/cm_t335/cm_t335.c b/board/compulab/cm_t335/cm_t335.c
index 428aee6..c4506b9 100644
--- a/board/compulab/cm_t335/cm_t335.c
+++ b/board/compulab/cm_t335/cm_t335.c
@@ -31,8 +31,8 @@
 
 	gpmc_init();
 
-#if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
-	status_led_set(STATUS_LED_BOOT, STATUS_LED_OFF);
+#if defined(CONFIG_LED_STATUS) && defined(CONFIG_LED_STATUS_BOOT_ENABLE)
+	status_led_set(CONFIG_LED_STATUS_BOOT, CONFIG_LED_STATUS_OFF);
 #endif
 	return 0;
 }