gralloc: Add QtiMapperExtensions

This change moves extensions to QtiMapperExtensions to decouple
it from IMapper revisions. The function
QtiMapper::getMapperExtensions() is used to access the extensions
through a mapper instance. QtiMapper revision is incremented to
2.0 to reflect the change.

CRs-Fixed: 2451975
Change-Id: I7043bd380e9b7b3ea8d9bac4da3e886a5d46b631
diff --git a/gralloc/vendor.qti.hardware.display.allocator-service.rc b/gralloc/vendor.qti.hardware.display.allocator-service.rc
new file mode 100644
index 0000000..ca2c7b9
--- /dev/null
+++ b/gralloc/vendor.qti.hardware.display.allocator-service.rc
@@ -0,0 +1,6 @@
+service vendor.qti.hardware.display.allocator /vendor/bin/hw/vendor.qti.hardware.display.allocator-service
+    class hal animation
+    user system
+    group graphics drmrpc
+    capabilities SYS_NICE
+    onrestart restart surfaceflinger