Revert "arm: mm: Add support for PJ4B cpu and init routines"

This reverts commit 2f6b216b3a0c0adf7154d649782c3045066a5a5d.
proc-v7: fix PJ4B CPU init routines
OSRC SM-T210R MK1 kernel update
configs: blackhawk_defconfig MK1 update
sec-battery: Standardize the output of the "online" property
Return "0" when no power supply is present
ARM: mmp: remove mach/gpio-pxa.h

Commit 157d2644cb0c1e71a18baaffca56d2b1d0ebf10f ("ARM: pxa: change gpio
to platform device") removed all includes of mach/gpio-pxa.h. It kept
this unused header in the tree. Using it can't work, as it itself
includes the non-existent header plat/gpio-pxa.h. This header can safely
be removed.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>