[U-Boot] [PATCH 1/3] README: document the CONFIG_GPIO_LED symbol

[Igor Grinberg]

The CONFIG_GPIO_LED symbol does not have any documentation in the README
file. Document the CONFIG_GPIO_LED symbol.

Signed-off-by: Igor Grinberg <grinberg at compulab.co.il>
---
 README | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/README b/README
index 09662a4..55c71fa 100644
--- a/README
+++ b/README
@@ -1951,6 +1951,14 @@ CBFS (Coreboot Filesystem) support
 		kernel). Defining CONFIG_STATUS_LED enables this
 		feature in U-Boot.
 
+		Additional options:
+
+		CONFIG_GPIO_LED
+		The status LED can be connected to a GPIO pin.
+		In such cases, the gpio_led driver can be used as a
+		status LED backend implementation. Define CONFIG_GPIO_LED
+		to include the gpio_led driver in the U-Boot binary.
+
 - CAN Support:	CONFIG_CAN_DRIVER
 
 		Defining CONFIG_CAN_DRIVER enables CAN driver support
-- 
1.8.1.5