Update the bindings doc and driver for pmi8994-gpio devices.

Signed-off-by: Vivek Gautam <redacted>
---

- Have been using this patch-set on db820c [1] for extcon with
  usb controller. The usb controller uses one of these gpios
  for usb-id/vbus detection.

[1] https://github.com/boddob/linux/tree/for-qcomlt/4.13rc2-merged

 Documentation/devicetree/bindings/pinctrl/qcom,pmic-gpio.txt | 2 ++
 drivers/pinctrl/qcom/pinctrl-spmi-gpio.c                     | 1 +
 2 files changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,pmic-gpio.txt b/Documentation/devicetree/bindings/pinctrl/qcom,pmic-gpio.txt
index 8d893a874634..74932318d41d 100644
--- a/Documentation/devicetree/bindings/pinctrl/qcom,pmic-gpio.txt
+++ b/Documentation/devicetree/bindings/pinctrl/qcom,pmic-gpio.txt

@@ -15,6 +15,7 @@ PMIC's from Qualcomm.
 		    "qcom,pm8921-gpio"
 		    "qcom,pm8941-gpio"
 		    "qcom,pm8994-gpio"
+		    "qcom,pmi8994-gpio"

 		    "qcom,pma8084-gpio"
 
 		    And must contain either "qcom,spmi-gpio" or "qcom,ssbi-gpio"

@@ -84,6 +85,7 @@ to specify in a pin configuration subnode:
 		    gpio1-gpio44 for pm8921
 		    gpio1-gpio36 for pm8941
 		    gpio1-gpio22 for pm8994
+		    gpio1-gpio10 for pmi8994
 		    gpio1-gpio22 for pma8084
 
 - function:

diff --git a/drivers/pinctrl/qcom/pinctrl-spmi-gpio.c b/drivers/pinctrl/qcom/pinctrl-spmi-gpio.c
index 664b641fd776..bf0a6438424b 100644
--- a/drivers/pinctrl/qcom/pinctrl-spmi-gpio.c
+++ b/drivers/pinctrl/qcom/pinctrl-spmi-gpio.c

@@ -799,6 +799,7 @@ static int pmic_gpio_remove(struct platform_device *pdev)
 	{ .compatible = "qcom,pm8916-gpio" },	/* 4 GPIO's */
 	{ .compatible = "qcom,pm8941-gpio" },	/* 36 GPIO's */
 	{ .compatible = "qcom,pm8994-gpio" },	/* 22 GPIO's */
+	{ .compatible = "qcom,pmi8994-gpio" },	/* 10 GPIO's */