selftests: vdso_test: support ARM64 targets

ARM64's vDSO exports its gettimeofday() implementation with a different
name (__kernel_gettimeofday) and version (LINUX_2.6.39) from other
architectures.  Add a corresponding special-case to vdso_test.

Signed-off-by: Greg Hackmann <ghackmann@google.com>
Bug: 67017029
Test: make -j vts
Change-Id: I54b2dfa99717da22b12783a98ef19291b5c581f5
Signed-off-by: Steve Muckle <smuckle@google.com>
1 file changed