msm8974: sepolicy: Update based on upstream changes

Upstream renamed "system" to "system_server" and added the
gpu which is not a duplicate.

Change-Id: I5ca5098c653f09c7901343d0ae71793f6eb21ab8
msm8974-common: Fixup CameraWrapper for L

Also clean up code and get rid of warnings.

Clean up from Arne Coucheron works on other samsung wrappers.

Change-Id: Icab1b9ec17710861f735a05dcdd87dac932c63c2
msm8974-common: Camera: Add getInt64 method needed by vendor lib

Change-Id: I9c6cba67f6217f5f234272b38391e571b6d32b5f
Signed-off-by: arter97 <qkrwngud825@gmail.com>