Add liboemcrypto.so as required by WV APEX

[ Merge of go/wvgerrit/164757 ]

Modify Widevine apex configuration to add add liboemcrypto.so as
required by WV APEX.

Bug: 243699259
Test: atp v2/widevine-eng/drm_compliance
Change-Id: I136dde5d77aed4fb14737e4692153c8f3b2c701b

libwvdrmengine/apex/device/Android.bp

@@ -0,0 +1,5 @@
+linker_config {
+    name: "widevine_linker_config",
+    src: "linker.config.json",
+    vendor: true,
+}