package/rsync: fix configure options

Rename configure options to avoid the following build failure raised
since bump to version 3.2.5 in commit
ae280782:

./simd-checksum-x86_64.cpp: In function 'uint32_t get_checksum1_cpp(char*, int32_t)':
./simd-checksum-x86_64.cpp:89:52: error: multiversioning needs 'ifunc' which is not supported on this target
   89 | __attribute__ ((target("default"))) MVSTATIC int32 get_checksum1_avx2_64(schar* buf, int32 len, int32 i, uint32* ps1, uint32* ps2) { return i; }
      |                                                    ^~~~~~~~~~~~~~~~~~~~~
./simd-checksum-x86_64.cpp:480:1: error: use of multiversioned function without a default
  480 | }
      | ^
If you can't fix the issue, re-run ./configure with --disable-roll-simd.

Fixes:
 - http://autobuild.buildroot.org/results/069da8e585da2e51bfd4f475cc12b9a134954b08



Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>