tegra-alt: adsp: add runtime get failure checks

tegra-alt: adsp: add runtime get failure checks

Add pm_runtime_get* failure checks. This also captures any
failures in starting ADSPOS.

Remove redundant pm_runtime_* calls from DAPM widget events.
These are not needed as driver's runtime resume and suspend
functions are called before starting and after stoppping the
playback.

Bug 200123443

Change-Id: I2c1f8fcff892634d4129e6cb08d6e21a7d63fdcd
Signed-off-by: Viraj Karandikar <vkarandikar@nvidia.com>
Signed-off-by: Nitin Kumbhar <nkumbhar@nvidia.com>
Reviewed-on: http://git-master/r/746123
(cherry picked from commit 093dc626c51467f3f85d10c3deb97df861ff85dc)
Reviewed-on: http://git-master/r/784832
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Sumit Bhattacharya <sumitb@nvidia.com>