L-MR1 specific fixes

Reset soinfo version to 0.
 Disable ifunc test for arm64 because of old toolchain
 in lmp-mr1-dev branch

 Note: this commit should be reverted in -plus-aosp branch.

Change-Id: I2d6d996d43bc35d5d4975c745779f43a988b31e6

tests/dlfcn_test.cpp

@@ -90,7 +90,7 @@ TEST(dlfcn, dlopen_noload) {
 }
 
 // ifuncs are only supported on intel and arm64 for now
-#if defined (__aarch64__) || defined(__i386__) || defined(__x86_64__)
+#if defined(__i386__) || defined(__x86_64__)
 TEST(dlfcn, ifunc) {
   typedef const char* (*fn_ptr)();