MAINTAINERS: Change email for Venus driver

My email at linaro.org will not be active soon, so change with
my private email.
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Acked-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

MAINTAINERS

@@ -17153,7 +17153,7 @@ F:	Documentation/devicetree/bindings/thermal/qcom-tsens.yaml
 F:	drivers/thermal/qcom/
 
 QUALCOMM VENUS VIDEO ACCELERATOR DRIVER
-M:	Stanimir Varbanov <stanimir.varbanov@linaro.org>
+M:	Stanimir Varbanov <stanimir.k.varbanov@gmail.com>
 M:	Vikash Garodia <quic_vgarodia@quicinc.com>
 L:	linux-media@vger.kernel.org
 L:	linux-arm-msm@vger.kernel.org