small configuration patch to add xscale-linux support

[Brendan Conoboy <blc@redhat.com>]

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This patch allows one to configure an xscale-linux-gnu gdb (which is 
essentially the same thing as arm-linux-gnu for gdb, but not for other 
tools).  Works for me.

-Brendan (blc@redhat.com)

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ChangeLog:
Mon Jul 21 20:10:16 UTC 2003  Brendan Conoboy  <blc@redhat.com>

        configure.host: Set gdb_host_cpu=arm when host_cpu=xscale

gdbserver/ChangeLog:
Mon Jul 21 20:09:34 UTC 2003  Brendan Conoboy  <blc@redhat.com>

        configure.srv: Add xscale*linux copy of arm*linux entry.

Index: configure.host
===================================================================
RCS file: /cvs/src/src/gdb/configure.host,v
retrieving revision 1.55
diff -c -r1.55 configure.host
*** configure.host	13 Jul 2003 16:15:59 -0000	1.55
--- configure.host	23 Jul 2003 17:46:21 -0000
***************
*** 21,26 ****
--- 21,27 ----
  s390*)			gdb_host_cpu=s390 ;;
  sh*)			gdb_host_cpu=sh ;;
  x86_64*)		gdb_host_cpu=i386 ;;
+ xscale*)		gdb_host_cpu=arm ;;
  *)			gdb_host_cpu=$host_cpu ;;
  
  esac
Index: gdbserver/configure.srv
===================================================================
RCS file: /cvs/src/src/gdb/gdbserver/configure.srv,v
retrieving revision 1.6
diff -c -r1.6 configure.srv
*** gdbserver/configure.srv	13 Jun 2003 17:49:52 -0000	1.6
--- gdbserver/configure.srv	23 Jul 2003 17:46:21 -0000
***************
*** 64,69 ****
--- 64,74 ----
  			srv_tgtobj="linux-low.o linux-x86-64-low.o i387-fp.o"
  			srv_linux_regsets=yes
  			;;
+   xscale*-*-linux*)	srv_regobj=reg-arm.o
+ 			srv_tgtobj="linux-low.o linux-arm-low.o"
+ 			srv_linux_usrregs=yes
+ 			srv_linux_thread_db=yes
+ 			;;
    *)			echo "Error: target not supported by gdbserver."
  			exit 1
  			;;