misc: Rename misc.(hh|cc) to logging.(hh|cc)

These files aren't a collection of miscellaneous stuff, they're the
definition of the Logger interface, and a few utility macros for
calling into that interface (panic, warn, etc.).

Change-Id: I84267ac3f45896a83c0ef027f8f19c5e9a5667d1
Reviewed-on: https://gem5-review.googlesource.com/6226
Reviewed-by: Brandon Potter <Brandon.Potter@amd.com>
Maintainer: Gabe Black <gabeblack@google.com>

src/base/SConscript

@@ -51,8 +51,8 @@ Source('hostinfo.cc')
 Source('inet.cc')
 Source('inifile.cc')
 Source('intmath.cc')
+Source('logging.cc')
 Source('match.cc')
-Source('misc.cc')
 Source('output.cc')
 Source('pollevent.cc')
 Source('random.cc')