ARM: dts: msm: Update TSENS number for 8939v3.0

TS4 is proposed instead of TS3 for GPU temperature readings.
Reverting back to TS3 as there is no data to back up the proposal.

Change-Id: Ib96af6812bfe2337a376b18b57f1d2c1808fac68
Signed-off-by: Rama Krishna Phani A <rphani@codeaurora.org>
Signed-off-by: Sridhar Gujje <sgujje@codeaurora.org>
Signed-off-by: Bharat Pawar <bpawar@codeaurora.org>
Signed-off-by: Nirmal Abraham <nabrah@codeaurora.org>