leds: Add driver for QPNP flash led

Add driver for the QPNP flash LED. It works over SPMI and is part of the
PM8941 PMIC.

Signed-off-by: Nícolas F. R. A. Prado <nfraprado@protonmail.com>

drivers/leds/Kconfig

@@ -928,6 +928,15 @@ config LEDS_ACER_A500
 	  This option enables support for the Power Button LED of
 	  Acer Iconia Tab A500.
 
+config LEDS_QPNP
+	tristate "Support for QPNP LEDs"
+	depends on SPMI
+	help
+	  This driver supports the flash/torch led of Qualcomm PNP PMIC.
+
+	  To compile this driver as a module, choose M here: the module will
+	  be called leds-qpnp.
+
 comment "LED Triggers"
 source "drivers/leds/trigger/Kconfig"
 

drivers/leds/Makefile

@@ -93,6 +93,7 @@ obj-$(CONFIG_LEDS_TURRIS_OMNIA)		+= leds-turris-omnia.o
 obj-$(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_QPNP)			+= leds-qpnp.o
 
 # LED SPI Drivers
 obj-$(CONFIG_LEDS_CR0014114)		+= leds-cr0014114.o