leds: leds-gpio-flash: add led gpio flash driver

the flash led pins flash_en and flash_now are connected with msm gpios.
add led gpio flash driver for qrd board.

Change-Id: I057958f8756c8fc31ba1a5032cf096d7a7e27e17
Signed-off-by: Tingting Yang <tingting@codeaurora.org>
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index f13e55a..159c6f6 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -300,6 +300,16 @@
 	  To compile this driver as a module, choose M here: the module will
 	  be called leds-qpnp.
 
+config LEDS_MSM_GPIO_FLASH
+	tristate "Support for GPIO Flash LEDs"
+	depends on GPIO_MSM_V3
+	help
+	  This driver supports the leds functionality of GPIO Flash LED. It
+	  includes flash mode and torch mode.
+
+	  To compile this driver as a module, choose M here: the module will
+	  be called leds-gpio-flash.
+
 config LEDS_WM831X_STATUS
 	tristate "LED support for status LEDs on WM831x PMICs"
 	depends on LEDS_CLASS