When some libopenssl options change curl will have to be rebuild to
adapt to those changes, avoiding undefined reference errors or features
disabled in curl.
Add CONFIG_OPENSSL_ENGINE, CONFIG_OPENSSL_WITH_COMPRESSION and
CONFIG_OPENSSL_WITH_NPN to PKG_CONFIG_DEPENDS so it will trigger
rebuild every time the options are changed.
Signed-off-by: DENG Qingfang <dengqf6@mail2.sysu.edu.cn>
972daf7fdc