More memory test interfaces

Change-Id: I21bb7c28aa774801cad94cd530ccb6b5c3b621e0
Bug: 143566068

tests/memory/2.0/Android.bp

@@ -0,0 +1,12 @@
+hidl_interface {
+    name: "android.hardware.tests.memory@2.0",
+    root: "android.hardware",
+    srcs: [
+        "IMemoryInterface.hal",
+        "types.hal",
+    ],
+    interfaces: [
+        "android.hidl.base@1.0",
+    ],
+    gen_java: true,
+}

tests/memory/2.0/IMemoryInterface.hal

@@ -0,0 +1,12 @@
+package android.hardware.tests.memory@2.0;
+
+interface IMemoryInterface {
+    // Flips all the bits in the given memory buffer.
+    bitwiseNot(memory mem);
+    // Returns a read-only buffer of size 8, containing the bytes 0..7.
+    getTestMem() generates(memory mem);
+    // Given two memory regions of the same size, returns two memory fields of
+    // equal size, the first contains the byte-wise sum and the other the byte-
+    // wise difference.
+    getSumDiff(TwoMemory in) generates(TwoMemory out);
+};

tests/memory/2.0/types.hal

@@ -0,0 +1,6 @@
+package android.hardware.tests.memory@2.0;
+
+struct TwoMemory {
+    memory mem1;
+    memory mem2;
+};