msm: camera: memmgr: Add support for non pix secure buffers

Add support to allocate such buffers which need to accessed
by non-pix VM.

CRs-Fixed: 2981372
Change-Id: Iac965a479e05d638c6323bfacd7c6a4d89f2a223
Signed-off-by: Rishabh Jain <risjai@codeaurora.org>

include/uapi/camera/media/cam_req_mgr.h

@@ -290,6 +290,7 @@ struct cam_req_mgr_link_control {
 #define CAM_MEM_FLAG_CDSP_OUTPUT                (1<<12)
 #define CAM_MEM_FLAG_DISABLE_DELAYED_UNMAP      (1<<13)
 #define CAM_MEM_FLAG_KMD_DEBUG_FLAG             (1<<14)
+#define CAM_MEM_FLAG_EVA_NOPIXEL                (1<<15)
 
 
 #define CAM_MEM_MMU_MAX_HANDLE                  16