package/libopenssl: fix build wrt. 64-bit time-related syscalls & structs

package/libopenssl: fix build wrt. 64-bit time-related syscalls & structs

riscv32 is (surprise!) a 32-bit architecture. But it has been Y2038-safe
from its inception. As such, there are no legacy binaries that may use
the 32-bit time syscalls, and thus they are not available on riscv32.

Code that directly calls to the syscalls without using the C libraries
wrappers thus need to handle this case by themselves.

Backport two cumulative patches from the upstream openssl development
branch that will eventually be openssl 3.0, but has not yet been
backported to the 1.1.1 stable branch.

Fixes:
    http://autobuild.buildroot.org/results/eb9/eb9a64d4ffae8569b5225083f282cf87ffa7c681/
    ...
    http://autobuild.buildroot.org/results/07e/07e413b24ba8adc9558c80267ce16dda339bf032/

Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Alistair Francis <alistair.francis@wdc.com>
Cc: Matthew Weber <matthew.weber@rockwellcollins.com>
Cc: Mark Corbin <mark@dibsco.co.uk>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>