staging: comedi: drivers: replace SDF_WRITEABLE with SDF_WRITABLE

As indicated in the comedi.h uapi header, SDF_WRITEABLE was a spelling
error in the API, SDF_WRITABLE is prefered.

For aesthetics, replace all the SDF_WRITEABLE uses with SDF_WRITABLE.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --cc drivers/staging/comedi/drivers/addi_apci_1500.c
Simple merge

diff --cc drivers/staging/comedi/drivers/addi_apci_1516.c
Simple merge

diff --cc drivers/staging/comedi/drivers/addi_apci_1564.c
Simple merge

diff --cc drivers/staging/comedi/drivers/addi_apci_16xx.c
Simple merge

diff --cc drivers/staging/comedi/drivers/addi_apci_2032.c
Simple merge

diff --cc drivers/staging/comedi/drivers/addi_apci_2200.c
Simple merge

diff --cc drivers/staging/comedi/drivers/addi_apci_3120.c
Simple merge

diff --cc drivers/staging/comedi/drivers/addi_apci_3501.c
Simple merge

diff --cc drivers/staging/comedi/drivers/addi_apci_3xxx.c
Simple merge

diff --cc drivers/staging/comedi/drivers/addi_watchdog.c
Simple merge

diff --cc drivers/staging/comedi/drivers/adv_pci1723.c
Simple merge

diff --cc drivers/staging/comedi/drivers/c6xdigio.c
Simple merge

diff --cc drivers/staging/comedi/drivers/comedi_test.c
Simple merge

diff --cc drivers/staging/comedi/drivers/das6402.c
Simple merge

diff --cc drivers/staging/comedi/drivers/dt9812.c
Simple merge

diff --cc drivers/staging/comedi/drivers/gsc_hpdi.c
Simple merge

diff --cc drivers/staging/comedi/drivers/me4000.c
Simple merge

diff --cc drivers/staging/comedi/drivers/me_daq.c
Simple merge

diff --cc drivers/staging/comedi/drivers/ni_usb6501.c
Simple merge

diff --cc drivers/staging/comedi/drivers/quatech_daqp_cs.c
Simple merge

diff --cc drivers/staging/comedi/drivers/serial2002.c
Simple merge

diff --cc drivers/staging/comedi/drivers/vmk80xx.c
Simple merge