[IA64] Enable early console for Ski simulator

When using Ski to debug early startup, it's a bit of a pain not to
have printk.

This patch enables the simulated console very early.
It may be worth conditionalising on the command line... but this is
enough for now.
Signed-off-by: NPeter Chubb <peterc@gelato.unsw.edu.au>
Signed-off-by: NTony Luck <tony.luck@intel.com>

arch/ia64/kernel/setup.c

@@ -389,6 +389,13 @@ early_console_setup (char *cmdline)
 	if (!efi_setup_pcdp_console(cmdline))
 		earlycons++;
 #endif
+#ifdef CONFIG_HP_SIMSERIAL_CONSOLE
+	{
+		extern struct console hpsim_cons;
+		register_console(&hpsim_cons);
+		earlycons++;
+	}
+#endif
 
 	return (earlycons) ? 0 : -1;
 }