Starting from Android O, <cutils/log.h> is planned to be deprecated in the
future. The use of the original <cutils/log.h> is split into 2 header files.

Per Treble team's (b/78370064) description, <log/log.h> is for native shared
libs or executables, and <android/log.h> is for app JNI.

So a conditional preprocessor is put in place to look at the
ANDROID_PLATFORM_SDK_VERSION definition. If the value is less than 27, means
it's Android N or older, and it ought to include <cutils/log.h>.

Otherwise, it should be 27 (Android O) or any greater version, and it's
supposed to include the new <log/log.h> file.

If ANDROID_PLATFORM_SDK_VERSION is not definied, Andorid build system catches
it and stops the building process with an error message.

Bug: b/116855807
Test: pi-dev(28), oc-mr1-dev(27), and nyc-mr2-dev(26) branches
Test: aosp_arm-eng target
Change-Id: I732803e900144bf291feeb2cba1d632301c4fa21
Reviewed-on: https://swiftshader-review.googlesource.com/21130Tested-by: Merck Hung <merckhung@google.com>
Reviewed-by: Merck Hung <merckhung@google.com>
Reviewed-by: Alistair Strachan <astrachan@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>