arm: arch: dalmore: Update camera clock and regulator

arm: arch: dalmore: Update camera clock and regulator

- Change CAM2_MCLK source to VI_SENSOR_CLK
- Fix regulator error

Change-Id: I7b07366edcc96d13128f763e2b1437baff88b752
Signed-off-by: Frank Chen <frankc@nvidia.com>
Reviewed-on: http://git-master/r/133886
(cherry picked from commit ec5ed191fce35ebc0a7b46f4365dac7177eaff3b)
Reviewed-on: http://git-master/r/140716
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Philip Breczinski <pbreczinski@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Rebase-Id: R14ebdf5290e7ca965bb40fee612c09de2206ca1c