kernel: move ubnt ledbar driver to a separate package

Simplifies the tree by removing a non-upstream kernel patch and related kconfig
symbols

Signed-off-by: Felix Fietkau <nbd@nbd.name>

target/linux/generic/hack-5.10/800-ubnt-ledbar-driver.patch

@@ -1,29 +0,0 @@
---- a/drivers/leds/Kconfig
-+++ b/drivers/leds/Kconfig
-@@ -931,6 +931,16 @@ config LEDS_ACER_A500
- 
- source "drivers/leds/blink/Kconfig"
- 
-+config LEDS_UBNT_LEDBAR
-+	tristate "LED support for Ubiquiti UniFi 6 LR"
-+	depends on LEDS_CLASS && I2C && OF
-+	help
-+	  This option enables support for the Ubiquiti LEDBAR
-+	  LED driver.
-+
-+	  To compile this driver as a module, choose M here: the module
-+	  will be called leds-ubnt-ledbar.
-+
- comment "LED Triggers"
- source "drivers/leds/trigger/Kconfig"
- 
---- a/drivers/leds/Makefile
-+++ b/drivers/leds/Makefile
-@@ -93,6 +93,7 @@ obj-$(CONFIG_LEDS_TURRIS_OMNIA)		+= leds
- obj-$(CONFIG_LEDS_WM831X_STATUS)	+= leds-wm831x-status.o
- obj-$(CONFIG_LEDS_WM8350)		+= leds-wm8350.o
- obj-$(CONFIG_LEDS_WRAP)			+= leds-wrap.o
-+obj-$(CONFIG_LEDS_UBNT_LEDBAR)		+= leds-ubnt-ledbar.o
- 
- # LED SPI Drivers
- obj-$(CONFIG_LEDS_CR0014114)		+= leds-cr0014114.o