msm: camera: csid: Rename TPG vd/dt macros

CSID TPG and PHY TPG require different values for VC/DT. This change
renames the macros to more distinct identifiers and assigns the
appropriate values based on input TPG type.

CRs-Fixed: 2632165
Change-Id: I136eb88a7cec338898cab8537cb080a0f26c2f77
Signed-off-by: Venkat Chinta <vchinta@codeaurora.org>