[RESEND][PATCH 1/2] lib/scatterlist: Make ARCH_HAS_SG_CHAIN an actual Kconfig

[Benjamin Herrenschmidt]

On Sat, 2014-03-22 at 11:13 -0700, Laura Abbott wrote:
> Rather than have architectures #define ARCH_HAS_SG_CHAIN in an architecture
> specific scatterlist.h, make it a proper Kconfig option and use that
> instead. At same time, remove the header files are are now mostly
> useless and just include asm-generic/scatterlist.h.
> 
> Cc: Russell King <linux at arm.linux.org.uk>
> Cc: Tony Luck <tony.luck at intel.com>
> Cc: Fenghua Yu <fenghua.yu at intel.com>

For powerpc

Acked-by: Benjamin Herrenschmidt <benh at kernel.crashing.org>

> Cc: Paul Mackerras <paulus at samba.org>
> Cc: Ingo Molnar <mingo at redhat.com>
> Cc: "H. Peter Anvin" <hpa at zytor.com>
> Cc: "James E.J. Bottomley" <JBottomley at parallels.com>
> Cc: Fenghua Yu <fenghua.yu at intel.com>
> Cc: Tony Luck <tony.luck at intel.com>
> Cc: Benjamin Herrenschmidt <benh at kernel.crashing.org>
> Cc: Paul Mackerras <paulus at samba.org>
> Cc: Martin Schwidefsky <schwidefsky at de.ibm.com>
> Cc: Heiko Carstens <heiko.carstens at de.ibm.com>
> Cc: Andrew Morton <akpm at linux-foundation.org>
> Signed-off-by: Laura Abbott <lauraa at codeaurora.org>