drivers: led: led_bcm6753: initial support

Add the support of the LED IP for bcm6357. This
LED IP supports blinking, fading and pulsating,
but for the moment, only blinking is supported.

Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
diff --git a/drivers/led/Makefile b/drivers/led/Makefile
index 8e3ae7f..2aa2c21 100644
--- a/drivers/led/Makefile
+++ b/drivers/led/Makefile
@@ -6,6 +6,7 @@
 obj-y += led-uclass.o
 obj-$(CONFIG_LED_BCM6328) += led_bcm6328.o
 obj-$(CONFIG_LED_BCM6358) += led_bcm6358.o
+obj-$(CONFIG_LED_BCM6753) += led_bcm6753.o
 obj-$(CONFIG_LED_BCM6858) += led_bcm6858.o
 obj-$(CONFIG_$(SPL_)LED_GPIO) += led_gpio.o
 obj-$(CONFIG_LED_CORTINA) += led_cortina.o