qseecom: Add new ioctl call.

Currently, qseecom user-space library does not have a way to
verify if a particular secure application is loaded in the
qsee or not. This new ioctl solves this issue.

Change-Id: Ia96459f3b8aadee2f6a3af564bb1cc83695759b5
Signed-off-by: Ramesh Masavarapu <rameshm@codeaurora.org>