[PATCH] dont include asm/cachectl.h on ARM systems

[Roland McGrath]

> Hi,
> 
> On Fri, May 29, 2009 at 07:58:47PM -0400, Mike Frysinger wrote:
> > Looking at the arches that provide __NR_cacheflush and the ones that
> > provide asm/cachectl.h shows that ARM falls only into the first category.
> 
> I'd prefer regular check with AC_CHECK_HEADERS instead of explicit #ifdef
> check for ARM.

I agree.