Fix -Wunused-parameter issues

Issue statements with the parameters casted to `void`. Alternatively we
could use __attribute__ ((unused)).

Change-Id: If831398c91e9f49bd5216a03ed4caaa2a7ab02bd
Signed-off-by: Nico Huber <nico.h@gmx.de>
---
M 82802ab.c
M atahpt.c
M atapromise.c
M atavia.c
M buspirate_spi.c
M cbtable.c
M ch341a_spi.c
M chipset_enable.c
M dediprog.c
M developerbox_spi.c
M digilent_spi.c
M dmi.c
M drkaiser.c
M dummyflasher.c
M ft2232_spi.c
M gfxnvidia.c
M hwaccess.c
M ich_descriptors.c
M internal.c
M it8212.c
M it85spi.c
M it87spi.c
M jedec.c
M libflashrom.c
M linux_mtd.c
M linux_spi.c
M mstarddc_spi.c
M nic3com.c
M nicintel.c
M nicintel_eeprom.c
M nicintel_spi.c
M nicnatsemi.c
M nicrealtek.c
M pcidev.c
M pickit2_spi.c
M pony_spi.c
M programmer.c
M rayer_spi.c
M satamv.c
M satasii.c
M sb600spi.c
M serial.c
M serprog.c
M spi25.c
M sst28sf040.c
M sst49lfxxxc.c
M udelay.c
M usbblaster_spi.c
M usbdev.c
M w39.c
M wbsio_spi.c
51 files changed, 274 insertions(+), 32 deletions(-)