log: Add check for LINT_RLOG

In order to make it easier to find radio system logging
mistakes, if LINT_RLOG is defined we will remove all the
definitions for ALOG* and SLOG*, as well as the log ids
to introduce compile and link errors.

Bug: 20143912
Change-Id: I1511bdce75213f3a5bacdbc4f2ab315aa1fa56fc

include/log/log.h

@@ -67,6 +67,23 @@ extern "C" {
 
 // ---------------------------------------------------------------------
 
+#ifndef __predict_false
+#define __predict_false(exp) __builtin_expect((exp) != 0, 0)
+#endif
+
+/*
+ *      -DLINT_RLOG in sources that you want to enforce that all logging
+ * goes to the radio log buffer. If any logging goes to any of the other
+ * log buffers, there will be a compile or link error to highlight the
+ * problem. This is not a replacement for a full audit of the code since
+ * this only catches compiled code, not ifdef'd debug code. Options to
+ * defining this, either temporarily to do a spot check, or permanently
+ * to enforce, in all the communications trees; We have hopes to ensure
+ * that by supplying just the radio log buffer that the communications
+ * teams will have their one-stop shop for triaging issues.
+ */
+#ifndef LINT_RLOG
+
 /*
  * Simplified macro to send a verbose log message using the current LOG_TAG.
  */
@@ -79,10 +96,6 @@ extern "C" {
 #endif
 #endif
 
-#ifndef __predict_false
-#define __predict_false(exp) __builtin_expect((exp) != 0, 0)
-#endif
-
 #ifndef ALOGV_IF
 #if LOG_NDEBUG
 #define ALOGV_IF(cond, ...)   ((void)0)
@@ -283,6 +296,8 @@ extern "C" {
     : (void)0 )
 #endif
 
+#endif /* !LINT_RLOG */
+
 // ---------------------------------------------------------------------
 
 /*
@@ -567,11 +582,15 @@ typedef enum {
 typedef enum log_id {
     LOG_ID_MIN = 0,
 
+#ifndef LINT_RLOG
     LOG_ID_MAIN = 0,
+#endif
     LOG_ID_RADIO = 1,
+#ifndef LINT_RLOG
     LOG_ID_EVENTS = 2,
     LOG_ID_SYSTEM = 3,
     LOG_ID_CRASH = 4,
+#endif
 
     LOG_ID_MAX
 } log_id_t;