msm: Rename msmtriton/apqtriton to sdm630/sda630

Update the code name from msmtriton/apqtriton to sdm630/sda630.
As part of this, update the filename containing "triton" and
files content containing "triton".

Change-Id: Ia558be75041e41e83d304d5fb4091c2a098e87c0
Signed-off-by: Neeraj Upadhyay <neeraju@codeaurora.org>