ARM: pxa: correct errata number for PXA270
ARM: pxa: correct errata number for PXA270

Comment incorrectly cites errata 39
    E39. SDIO: SDIO Devices Not Working at 19.5 Mbps

Should be errata 38
    E38. MEMC: Memory Controller hangs when entering Self Refresh Mode.

Signed-off-by: Andrew Ruder <9d07a634b9bf24eddb5c22818087ee5331258d28@elecsyscorp.com>
Acked-by: Haojian Zhuang <979139d45d262f0480136b0da512e0afa0fe79d3@linaro.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs