dt-bindings: qcom: Add MDM9615 bindings

Reviewed-by: NStephen Boyd <sboyd@codeaurora.org>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NNeil Armstrong <narmstrong@baylibre.com>
Signed-off-by: NAndy Gross <andy.gross@linaro.org>

Documentation/devicetree/bindings/arm/qcom.txt

@@ -22,6 +22,7 @@ The 'SoC' element must be one of the following strings:
 	msm8916
 	msm8974
 	msm8996
+	mdm9615
 
 The 'board' element must be one of the following strings: