CMakeLists.txt: Add AUTOCONF_HOST_OPT to help cross compiling
CMakeLists.txt: Add AUTOCONF_HOST_OPT to help cross compiling

This helps in doing cross compiles for modules which are using
GNU autoconf for build system

Signed-off-by: Khem Raj <729d64b6f67515e258459a5f6d20ec88b2caf8df@gmail.com>

fluent/fluent-bit,fluent/fluent-bit,nokute78/fluent-bit,fluent/fluent-bit,fluent/fluent-bit,nokute78/fluent-bit,nokute78/fluent-bit,fluent/fluent-bit,fluent/fluent-bit,takahasi/fluent-bit,fluent/fluent-bit,takahasi/fluent-bit,fluent/fluent-bit,takahasi/fluent-bit,nokute78/fluent-bit,nokute78/fluent-bit,nokute78/fluent-bit,takahasi/fluent-bit,takahasi/fluent-bit,nokute78/fluent-bit,fluent/fluent-bit,takahasi/fluent-bit,fluent/fluent-bit,takahasi/fluent-bit,takahasi/fluent-bit,nokute78/fluent-bit,nokute78/fluent-bit,nokute78/fluent-bit,nokute78/fluent-bit,fluent/fluent-bit,nokute78/fluent-bit,fluent/fluent-bit