Documentation: dt: pinctrl: fix spelling mistake

Signed-off-by: NEric Engestrom <eric@engestrom.ch>
Signed-off-by: NRob Herring <robh@kernel.org>

Documentation/devicetree/bindings/pinctrl/qcom,pmic-gpio.txt

@@ -122,7 +122,7 @@ to specify in a pin configuration subnode:
 		    2: 1.5uA                    (PMIC_GPIO_PULL_UP_1P5)
 		    3: 31.5uA                   (PMIC_GPIO_PULL_UP_31P5)
 		    4: 1.5uA + 30uA boost       (PMIC_GPIO_PULL_UP_1P5_30)
-		    If this property is ommited 30uA strength will be used if
+		    If this property is omitted 30uA strength will be used if
 		    pull up is selected
 
 - bias-high-impedance: