[RESEND PATCH] Convert PARISC sysctl to be generic

Hi, This came out ARC Port's review by Arnd where he suggested using the existing sysctl knobs in parisc and/or ia64 for runtime controlling unaligned access emulation. Turns out that ARC port needs bit of both. The common sysctl knobs are now #ifdef based on init/Kconfig options which the

[RESEND PATCH] Convert PARISC sysctl to be generic

Hi, This came out ARC Port's review by Arnd where he suggested using the existing sysctl knobs in parisc and/or ia64 for runtime controlling unaligned access emulation. Turns out that ARC port needs bit of both. The common sysctl knobs are now #ifdef based on init/Kconfig options which the