[sanitizer] Update from zx_time_get to zx_clock_get
[sanitizer] Update from zx_time_get to zx_clock_get

This Zircon syscall was renamed.

Differential Revision: https://reviews.llvm.org/D42617

git-svn-id: c199f293c43da69278bea8e88f92242bf3aa95f7@323611 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt