Allow LOG_ALWAYS_FATAL_IF in constexpr functions

* When __FAKE_USE_VA_ARGS has args that are not constexpr,
  reaching it in a constexpr function will be make the
  constexpr function invalid.
  To allow LOG_ALWAYS_FATAL_IF in a constexpr functions when
  the tested condition is false, it should call __FAKE_USE_VA_ARGS
  only when the tested condition is true.
* Other ALOG*_IF macros are also changed to call
  __FAKE_USE_VA_ARGS only when the tested condition is true.

Bug: 148548418
Test: WITH_TIDY=1 make
Change-Id: Ie8a444dffbf9cbef78e5e0b49b44f4092bcf9982