In Yocto builds, zstd is built via Makefile and does not install
CMake package configuration files. As a result, Findzstd.cmake
fails to detect ZSTD_INCLUDE_DIRS.
Add pkg-config based detection as a fallback to properly locate
zstd headers and libraries.
Signed-off-by: Minjae Kim <flowergom@gmail.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Minjae Kim