treewide: colorize command ip

It is hard to read non colorized ip output.
This adds an alias to colorize ip by default.

Signed-off-by: Robert Langhammer <rlanghammer@web.de>
Reviewed-by: Fabian Bläse <fabian@blaese.de>

bsp/default/root_file_system/etc/profile

@@ -23,6 +23,7 @@ alias l='ls -CF'
 alias la='ls -A'
 alias ll='ls -alF'
 alias ls='ls --color=auto'
+alias ip='ip --color=auto'
 
 # and color my prompt
 export PS1='\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '