bashrc: use xterm as default terminal

* this fixes apps like nano not working from a bash shell

Change-Id: I92e22f845172e63abb5abb3567c1447041e977d5
diff --git a/etc/bashrc b/etc/bashrc
index a840873..93efcd1 100644
--- a/etc/bashrc
+++ b/etc/bashrc
@@ -27,7 +27,7 @@
 
 # set some environment variables
 HOME=/sdcard
-TERM=linux
+TERM=xterm
 
 # enable colorful terminal
 if [[ ${EUID} == 0 ]] ; then