qtbase: link against libssl at compile-time

When openssl functions are called from qt, the following errors appears:

qt.network.ssl: QSslSocket: cannot resolve EVP_PKEY_base_id
qt.network.ssl: QSslSocket: cannot resolve SSL_get_peer_certificate

This is a known issue for "meta-qt5" layer:
https://github.com/meta-qt5/meta-qt5/issues/437

The solution is to force libQt5Network.so to link against openssl library at
compile-time by providing "-openssl-linked" option.
https://doc.qt.io/qt-5/ssl.html#enabling-and-disabling-ssl-support



The qtbase recipe has a special variable "OPENSSL_LINKING_MODE" that allows to
choose whether to link to OpenSSL library at linking time or run time.

Signed-off-by: Dmitry Petrov <dmitry.petrov@rtsoft.de>

recipes-qt/qt5/qtbase_%.bbappend

@@ -2,6 +2,9 @@ FILESEXTRAPATHS:prepend := "${THISDIR}/${PN}:"
 
 SRC_URI += "file://0001-QStylesheetStyle-fix-push-button-label-alignment.patch"
 
+# Use link in openssl since we are using OpenSSL 3.0.x
+OPENSSL_LINKING_MODE = "-linked"
+
 PACKAGECONFIG_DISTRO:append = " ${@bb.utils.contains('DISTRO_FEATURES', 'opengl', 'gbm gles2 kms eglfs', 'no-opengl', d)} "
 PACKAGECONFIG_DISTRO:remove = " ${@bb.utils.contains('MACHINE', 'seco-mx6-fsl', 'gbm', '', d)} "
 PACKAGECONFIG_DISTRO:append = " linuxfb "