drivers/misc: create new module to handle sysfs and topology events

Create a new module to handle sysfs and topology events that are
related to application/userspace layer interactions for HDCP
functionality. In turn, this will create a clear separation from
the HDCP QSEECOM layer that defines the communication mechanism between
the kernel and the TrustZone layers.

CRs-Fixed: 2183436
Change-Id: I048aa95b24044646126e80d8af88893af16e72d3
Signed-off-by: Ajay Singh Parmar <aparmar@codeaurora.org>
Signed-off-by: Tatenda Chipeperekwa <tatendac@codeaurora.org>