bashrc: set alias ls="busybox ls --color=auto"

without "auto", scripting fails e.g.
 for i in `ls /`;do
     if [ -e /$i ];
     then
         echo pass
     else
         echo fail
     fi
 done

Change-Id: Id2563143ed2c359933c5b861cc2299f387e34d9c
diff --git a/etc/bashrc b/etc/bashrc
index 807d3d5..0ca2cc1 100644
--- a/etc/bashrc
+++ b/etc/bashrc
@@ -42,7 +42,7 @@
 	eval alias ${i}=\"busybox ${i}\"
 done
 unset i
-alias ls='busybox ls --color'
+alias ls='busybox ls --color=auto'
 alias sysro='mount -o remount,ro /system'
 alias sysrw='mount -o remount,rw /system'