qseecom: Fix compilation errors

While porting the changes from 4.9 kernel version to 4.4
version, there are few function prototype got changed which
leads to compilation error, this patch fixes those errors by
using the appropriate functions and added some definitions.

Change-Id: I525e84f25912377cad72f72b6d451702f9afd2c6
Signed-off-by: Mohamed Sunfeer <msunfeer@codeaurora.org>