[PATCH] fixes for the SLB shadow buffer

[Paul Mackerras]

Michael Neuling writes:

> +		slb_shadow_update(mk_esid_data(VMALLOC_START, 1),
> +				  mk_vsid_data(VMALLOC_START, vflags), 1);

Could you re-jig slb_shadow_update to take ea, slot and vflags, and
call mk_[ev]sid_data itself, rather than exposing mk_esid_data and
mk_vsid_data, please?

Paul.