Add Kbuild entries for msm_hdmi_hdcp_mgr.h to ensure that this
uapi header is copied out from display techpack path for
userspace clients to use after kernel compilation.
Change-Id: I0780a1eb9e85badabc58b172d46c73822c2210e3
Signed-off-by: Tatenda Chipeperekwa <tatendac@codeaurora.org>
