arm: Remove unregister MACH_TYPE_xxx uses

Before we can sync with the latest mach-types.h file from the Linux
Kernel we need to remove some instances of MACH_TYPE_xxx from our
sources.  As these values have been removed from the canonical upstream
source we should not be using them either, so drop.

Cc: Tom Warren <twarren@nvidia.com>
Cc: Lucas Stach <dev@lynxeye.de>
Cc: Luka Perkov <luka@openwrt.org>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Heiko Schocher <hs@denx.de>
Cc: Thomas Weber <weber@corscience.de>
Cc: Lucile Quirion <lucile.quirion@savoirfairelinux.com>
Cc: Matthias Weisser <weisserm@arcor.de>
Cc: Suriyan Ramasami <suriyan.r@gmail.com>
Cc: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Cc: Bo Shen <voice.shen@atmel.com>
Cc: Nick Thompson <nick.thompson@gefanuc.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Erik van Luijk <evanluijk@interact.nl>
Cc: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Tom Rini <trini@konsulko.com>