package/qt5: fix build failure due to libressl use

Qt5 only supports openssl, check [0] and [1]. So in qt5base.mk let's check
if BR2_PACKAGE_LIBOPENSSL is enabled instead of BR2_PACKAGE_OPENSSL(that
could be openssl or libressl) and for qt5enginio and qt5webkit let's select
BR2_PACKAGE_OPENSSL_FORCE_LIBOPENSSL instead of only BR2_PACKAGE_OPENSSL.
This way we make sure that only openssl is selected and not libressl or
other future openssl-like implementations.

Fixes:
http://autobuild.buildroot.net/results/a956b48b782dbaa055d7146360465e2493a809d9/

[0]: https://doc.qt.io/qt-5/ssl.html#enabling-and-disabling-ssl-support
[1]: https://bugreports.qt.io/browse/QTBUG-68374

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/qt5/qt5base/qt5base.mk

@@ -229,8 +229,8 @@ else
 QT5BASE_CONFIGURE_OPTS += -no-eglfs
 endif
 
-QT5BASE_CONFIGURE_OPTS += $(if $(BR2_PACKAGE_OPENSSL),-openssl,-no-openssl)
-QT5BASE_DEPENDENCIES   += $(if $(BR2_PACKAGE_OPENSSL),openssl)
+QT5BASE_CONFIGURE_OPTS += $(if $(BR2_PACKAGE_LIBOPENSSL),-openssl,-no-openssl)
+QT5BASE_DEPENDENCIES   += $(if $(BR2_PACKAGE_LIBOPENSSL),openssl)
 
 QT5BASE_CONFIGURE_OPTS += $(if $(BR2_PACKAGE_QT5BASE_FONTCONFIG),-fontconfig,-no-fontconfig)
 QT5BASE_DEPENDENCIES   += $(if $(BR2_PACKAGE_QT5BASE_FONTCONFIG),fontconfig)

package/qt5/qt5enginio/Config.in

@@ -1,6 +1,8 @@
 config BR2_PACKAGE_QT5ENGINIO
 	bool "qt5enginio"
 	select BR2_PACKAGE_OPENSSL
+	# Only openssl is supported by qt5
+	select BR2_PACKAGE_OPENSSL_FORCE_LIBOPENSSL
 	select BR2_PACKAGE_QT5BASE_GUI
 	select BR2_PACKAGE_QT5BASE_NETWORK
 	help

package/qt5/qt5webkit/Config.in

@@ -16,6 +16,8 @@ config BR2_PACKAGE_QT5WEBKIT
 	select BR2_PACKAGE_LEVELDB
 	select BR2_PACKAGE_LIBPNG
 	select BR2_PACKAGE_OPENSSL
+	# Only openssl is supported by qt5
+	select BR2_PACKAGE_OPENSSL_FORCE_LIBOPENSSL
 	select BR2_PACKAGE_QT5BASE_ICU
 	select BR2_PACKAGE_QT5BASE_GUI
 	select BR2_PACKAGE_QT5BASE_WIDGETS