msm: cpp: Move IOCTL data structure to common header file

All IOCTL calls data structures have to reside in a
common header file, which is visible from user-space.
These data structures are common for kernel code and
user-space code.

Change-Id: I0e2a956093e4f2069ee16241572a64b9b3737dca
Signed-off-by: Iliya Varadzhakov <ivarad@codeaurora.org>