arm: remove machine_desc.io_pg_offst and .phys_io

Since we're now using addruart to establish the debug mapping, we can
remove the io_pg_offst and phys_io members of struct machine_desc.

The various declarations were removed using the following script:

  grep -rl MACHINE_START arch/arm | xargs \
  sed -i '/MACHINE_START/,/MACHINE_END/ { /\.\(phys_io\|io_pg_offst\)/d }'

[ Initial patch was from Jeremy Kerr, example script from Russell King ]

Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Acked-by: Eric Miao <eric.miao at canonical.com>

arch/arm/mach-omap2/board-omap4panda.c

@@ -294,8 +294,6 @@ static void __init omap4_panda_map_io(void)
 
 MACHINE_START(OMAP4_PANDA, "OMAP4 Panda board")
 	/* Maintainer: David Anders - Texas Instruments Inc */
-	.phys_io	= 0x48000000,
-	.io_pg_offst	= ((0xfa000000) >> 18) & 0xfffc,
 	.boot_params	= 0x80000100,
 	.map_io		= omap4_panda_map_io,
 	.init_irq	= omap4_panda_init_irq,