IKXCLOCK-10168 pvr: change mot version to 4

it matchs the fix on user for CTS 6.0 test failed issues

Change-Id: Idca60872d564f22a7de851b4f2fa06bfa48b1258
diff --git a/drivers/gpu/pvr/Makefile b/drivers/gpu/pvr/Makefile
index 66d51b7..049e0d2 100755
--- a/drivers/gpu/pvr/Makefile
+++ b/drivers/gpu/pvr/Makefile
@@ -10,7 +10,7 @@
 	-Idrivers/gpu/pvr/services4/srvkm/env/linux \
 	-Idrivers/gpu/pvr/services4/system/include \
 	-DLINUX -D__linux__ \
-	-DMOT_BUILD=3 \
+	-DMOT_BUILD=4 \
 	-DANDROID \
 	-DPVR_BUILD_DIR="\"omap3630_android\"" \
 	-DSUPPORT_SGX \