drm/msm/dp: add support for PHY CTS 1.4 tests

Add support for PHY CTS 1.4 tests by adding the definitions for
the new test patterns, and programming the DisplayPort controller
to generate the patterns.

CRs-Fixed: 2139669
Change-Id: Ia9ec33dfc83a3db9c87af81d347ee86cdd28350a
Signed-off-by: Tatenda Chipeperekwa <tatendac@codeaurora.org>