msm: thermal: Add cpu mask control for frequency limiting

Limit the number of cpus affected by kernel thermal module's frequency
control mechanism by specifying the participating cpus in the
freq-control-mask. Frequency control can be disabled, if the mask is 0.

Change-Id: Iab659730dd06ce59521917c8ba6210d7dd1311b0
Signed-off-by: Praveen Chidambaram <pchidamb@codeaurora.org>
diff --git a/arch/arm/boot/dts/msm8226.dtsi b/arch/arm/boot/dts/msm8226.dtsi
index 631d3a3..719d795 100644
--- a/arch/arm/boot/dts/msm8226.dtsi
+++ b/arch/arm/boot/dts/msm8226.dtsi
@@ -825,6 +825,7 @@
 		qcom,limit-temp = <60>;
 		qcom,temp-hysteresis = <10>;
 		qcom,freq-step = <2>;
+		qcom,freq-control-mask = <0xf>;
 	};
 
 	spi_0: spi@f9923000 { /* BLSP1 QUP1 */