tree 2611fa049af667c73e353be43fb8a5aa11c4c7f1
parent a0f68618b59a0e9ac45b80c5a2e04f5d070a869b
author Simon Glass <sjg@chromium.org> 1538416506 -0600
committer Simon Glass <sjg@chromium.org> 1539081626 -0600

log: Add helpers for common log levels

At present to output a log message you need something like:

   log(UCLASS_SPI, LOCL_INFO, "message1");
   log(UCLASS_SPI, LOCL_INFO, "message2");

but many files use the same category throughout. Also it is helpful to
shorten the length of log names, providing helpers for common logging
levels. Add some macros so that it is possible to do:

   (top of file, before #includes)
   #define LOG_CATEGORY UCLASS_SPI

   (later in the file)
   log_info("message1");
   log_debug("message2");
   log_err("message3");

Signed-off-by: Simon Glass <sjg@chromium.org>