liblog: add log/log_radio.h

Move RLOG logging macros to their own home.

RLOGV
RLOGV_IF
RLOGD
RLOGD_IF
RLOGI
RLOGI_IF
RLOGW
RLOGW_IF
RLOGE
RLOGE_IF

Test: gTest liblog-unit-tests --gtest_filter=liblog.RLOG
Bug: 34250038
Change-Id: Iad5b5abf23c7a537ff5293bb55a6633dce2e837d
diff --git a/liblog/tests/Android.mk b/liblog/tests/Android.mk
index 6eba86e..1a685df 100644
--- a/liblog/tests/Android.mk
+++ b/liblog/tests/Android.mk
@@ -56,7 +56,8 @@
 
 test_src_files := \
     liblog_test.cpp \
-    log_id_test.cpp
+    log_id_test.cpp \
+    log_radio_test.cpp
 
 # to prevent breaking the build if bionic not relatively visible to us
 ifneq ($(wildcard $(LOCAL_PATH)/../../../../bionic/libc/bionic/libc_logging.cpp),)