Minor tweaks to debug output; started renaming some icons to include size in...

Minor tweaks to debug output; started renaming some icons to include size in the name; SAMA5 NxWM config needs libm

configs/sama5d3x-ek/nxwm/defconfig

@@ -605,7 +605,7 @@ CONFIG_STDIO_BUFFER_SIZE=64
 CONFIG_STDIO_LINEBUFFER=y
 CONFIG_NUNGET_CHARS=2
 CONFIG_LIB_HOMEDIR="/"
-# CONFIG_LIBM is not set
+CONFIG_LIBM=y
 # CONFIG_NOPRINTF_FIELDWIDTH is not set
 CONFIG_LIBC_FLOATINGPOINT=y
 CONFIG_LIB_RAND_ORDER=1