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-mmp/ttc_dkb.c

@@ -125,8 +125,6 @@ static void __init ttc_dkb_init(void)
 }
 
 MACHINE_START(TTC_DKB, "PXA910-based TTC_DKB Development Platform")
-	.phys_io        = APB_PHYS_BASE,
-	.io_pg_offst    = (APB_VIRT_BASE >> 18) & 0xfffc,
 	.map_io		= mmp_map_io,
 	.nr_irqs	= TTCDKB_NR_IRQS,
 	.init_irq       = pxa910_init_irq,