drm/msm: fix copyright marking in "msm" drm driver

msm driver is updated signficantly by CAF authors but
it does not carry the CAF license. This patch update it
accordingly. At the same time; kms, smmu, plane, crtc, encoder
code was written by referring the mdp5 driver but it did not
carry the license from mdp5 driver. The patch fixes the
issue.

Change-Id: I4670d2220d6df46213c7220a2b46de32e3ec15a5
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>