liblog: add API level guard to NDK log.h header

Bug: 119867234
Test: build
Merged-In: I6fdd7c070af06f04314b9bf7bbfede2a106e0d7c
Change-Id: I6fdd7c070af06f04314b9bf7bbfede2a106e0d7c
(cherry picked from commit 59e93a55fc1cbe0373bcb708469d73b5d22fc5a4)
1 file changed