graphics: rev IAllocator/IMapper to 4.0

Rev the IAllocator/IMapper HIDL interfaces to 4.0. This patch is
a copy paste from IAllocator/IMapper 3.0.

Bug: 136016160
Test: Compiles and boots

Change-Id: Ia7f159f97fe0f812b5f0e10a850715364090883c
diff --git a/graphics/mapper/4.0/utils/OWNERS b/graphics/mapper/4.0/utils/OWNERS
new file mode 100644
index 0000000..96f6d51
--- /dev/null
+++ b/graphics/mapper/4.0/utils/OWNERS
@@ -0,0 +1,3 @@
+# Graphics team
+marissaw@google.com
+stoza@google.com