ARM: tegra: pm: suspend trace event

A new trace event is added for tracing cpu suspend start and end

Change-Id: I2506e3aed0692c44fb4325e9d381cea53228b0c3
Signed-off-by: Sivaram Nair <sivaramn@nvidia.com>
Reviewed-on: http://git-master/r/101748
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Juha Tukkinen <jtukkinen@nvidia.com>
ARM: tegra: cardhu: wakeup system from GPIO_PV0 without key detection

To meet the LP0 exit power on sequence, it is require to wake system
for tegra gpio in place of PMIC for E1291-A04.
Also it is observed that if GPIO key is used to wakeup then there is
possibility of loosing the key event and hence adding the gpio
GPIO_PV0 as the key with code of RESERVED so that it can only
wakeup system but will not able to send the key event through
gpio keys.

bug 981320

Change-Id: I8610adca4b5ed8ae79f8fcca9a1d4b5548158c60
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-on: http://git-master/r/101784
Tested-by: Sang-Hun Lee <sanlee@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
asoc:tegra: Enable I2S tx in voice call

Associated with I2S there is a playback ref count, when
we open the I2S for plyabck it is incremented and during
voice call we check if its not zero then enable the tX.
This logic fails if the start-trigger is not called for the prior
playback stream. Hence we unconditionally enable the tx,
which is harmless

Bug: 981806

Change-Id: I66aafda596e2b2b03745e93f3e851dedc3b8ef5d
Signed-off-by: Nikesh Oswal <noswal@nvidia.com>
Reviewed-on: http://git-master/r/101996
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Scott Peterson <speterson@nvidia.com>