[Skiboot] [TRIVIAL PATCH] external/common: Fix grammar in arch_flash error message

[Stewart Smith]

Samuel Mendoza-Jonas <sam.mj at au1.ibm.com> writes:
> Signed-off-by: Samuel Mendoza-Jonas <sam.mj at au1.ibm.com>
> ---
>  external/common/arch_flash_powerpc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Thanks! merged to stable and master.

Stable because.. well... bad grammar fits the "actual problem" category
according to my mood today.