20260221-configure-all-crypto-fpecc

[douzzer]

configure.ac: restore fpecc to enable-all-crypto, accidentally removed in f376ae2.

tested with

wolfssl-multi-test.sh ...
'.*cust-kernel.*'

History on this:
Before #9800, fpecc was excluded from ENABLED_LINUXKM_PIE builds, with this note:

    # the compiler optimizer generates a weird out-of-bounds bss reference for
    # find_hole() in the FP_ECC implementation.
    if test "$ENABLED_LINUXKM_PIE" != yes
    then
        test "$enable_fpecc" = "" && test "$enable_ecc" != "no" && enable_fpecc=yes

After #9800, the ELF addend is compensated in each relocation, so all reconstructed symbol offsets are strictly in-bounds, and fpecc is safe in linuxkm-pie builds.

Meanwhile, the complete removal of fpecc from all-crypto was purely an editing error.

[kaleb-himes]

Good to get rid of --enable-all-crypto as a default setting (not good for FIPS customer to have that on) but also not ideal to lose the optimizations that come with fpecc. Thanks @douzzer