ide: fix au1xxx-ide breakage

On Monday 28 April 2008, Sergei Shtylyov wrote:
> Hello, I wrote:
> 
> > Fix these warnings emitted when compiling drivers/ide/mips/au1xxx-ide.c:
> 
> > include/asm/mach-au1x00/au1xxx_ide.h:137: warning: 'auide_tune_drive' declared 
> > `static' but never defined
> > include/asm/mach-au1x00/au1xxx_ide.h:138: warning: 'auide_tune_chipset' declared
> >  `static' but never defined
> 
> > by wiping out the whole "function prototyping" section from the header file
> > <asm-mips/mach-au1x00/au1xxx_ide.h> as it mostly declared functions that are
> > already dead in the IDE driver; move the only useful prototype into the driver.
> > 
> > Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
> 
> > ---
> > I'm not sure thru which tree this should go -- probably thru Linux/MIPS one...
> 
> > Bart, au1xxx-ide-fix-mwdma-support.patch will probably need to be updated to
> > remove that added prototype since it won't be needed anymore...
> 
>     Which you haven't done either in that patch or in 
> au1xxx-ide-use-init_dma-method.patch. So, face the consequences:
> 
> drivers/ide/mips/au1xxx-ide.c:456: error: conflicting types for 'auide_ddma_init'
> drivers/ide/mips/au1xxx-ide.c:51: error: previous declaration of
> 'auide_ddma_init' was here
> drivers/ide/mips/au1xxx-ide.c:456: error: conflicting types for 'auide_ddma_init'
> drivers/ide/mips/au1xxx-ide.c:51: error: previous declaration of
> 'auide_ddma_init' was here
> drivers/ide/mips/au1xxx-ide.c:51: warning: 'auide_ddma_init' used but never
> defined

Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>