[ARM] 5091/1: Add missing bitfield include to regs-lcd.h

Macros like Fld() or FShft used in regs-lcd.h are defined in bitfield.h, but
the latter is not included.
Also fix one whitespace issue while being there.

Signed-off-by: Antonio Ospite <ao2@openezx.org>
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Acked-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>