PCMCIA: sa11x0: h3600: convert to use new irq/gpio management

Convert iPAQ socket driver to use the new irq/gpio management.  As
this already uses the GPIO subsystem, these changes are localized
to just the PCMCIA directory.

Acked-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>