Update sample results for Allwinner platform

When testing on the Allwinner platform, memcpy_armv5te_no_overfetch
now shows significant improvements for non-aligned copies with
varying sizes.

A summary of some test results (MB/s):

Test:                        glibc   armv5te  armv5te
                             memcpy           no
                                              overfetch
64 bytes randomly aligned     435     374      452
137 bytes randomly aligned    669     608      657
1024 bytes randomly aligned  1027    1026     1038
64 bytes, src/dst aligned     556     588      646
Up to 1024 bytes randomly al. 916     938      966
Up to 64 bytes randomly al.   225     230      246
64 bytes 32-byte aligned      695     594      578
296 bytes 32-byte aligned     932     920      907
4096 bytes 4096-byte aligned  976     967      961

For other aligned tests, performance is comparable between the
different implementations.