pcmcia: split up modify_configuration() into two fixup functions

pcmcia_modify_configuration() was only used by two drivers to fix up
one issue each: setting the Vpp to a different value, and reducing
the IO width to 8 bit. Introduce two explicitly named functions
handling these things, and remove one further typedef.

CC: netdev@vger.kernel.org
CC: linux-mtd@lists.infradead.org
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

include/pcmcia/ds.h

@@ -212,7 +212,9 @@ int pcmcia_release_window(struct pcmcia_device *p_dev, struct resource *res);
 int pcmcia_map_mem_page(struct pcmcia_device *p_dev, struct resource *res,
 			unsigned int offset);
 
-int pcmcia_modify_configuration(struct pcmcia_device *p_dev, modconf_t *mod);
+int pcmcia_fixup_vpp(struct pcmcia_device *p_dev, unsigned char new_vpp);
+int pcmcia_fixup_iowidth(struct pcmcia_device *p_dev);
+
 void pcmcia_disable_device(struct pcmcia_device *p_dev);
 
 /* IO ports */