disp: msm: drmP.h removed, add new headers

Commit ("drm: delete drmP.h + drm_os_linux.h") removes the
drmP header file. This changes updates the msm driver
by adding the individually required header files.

Change-Id: I360aa028c2ce75317d33da988b36164041177014
Signed-off-by: Samantha Tran <samtran@codeaurora.org>
Signed-off-by: Nilaan Gunabalachandran <ngunabal@codeaurora.org>

msm/msm_gem_prime.c

@@ -21,6 +21,8 @@
 #include "msm_mmu.h"
 #include "msm_kms.h"
 
+#include <drm/drm_drv.h>
+
 #include <linux/dma-buf.h>
 #include <linux/ion.h>
 #include <linux/msm_ion.h>