openssl: update 32bit x86 target from linux-elf -> linux-x86
According to comments in Configurations/10-main.conf, the linux-elf
target is "... to be used on older Linux machines where gcc doesn't
understand -m32 and -m64".
The linux-x86 target appears to be the newer replacement (currently
the only difference between the two is that linux-x86 adds -m32 to
cflags).
Signed-off-by: Andre McCurdy <armccurdy@gmail.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
