package/libcamera: force-disable qcam for now

Fixes:
http://autobuild.buildroot.net/results/5b0dc8acd491f1d7b20f5b5f065b28212b9d4912/
http://autobuild.buildroot.net/results/61e4bce00a2aff3f531de6c1896d4dc1f92ba5e3/

qcam is based on Qt6 since commit 71aa3ceec30b ("apps: qcam: Port to Qt
6") which is part of the v0.3.1 release.

qcam being enabled when BR2_PACKAGE_QT5BASE_WIDGETS symbol is defined
breaks the build as it's missing the qt6 dependencies.

The migration to Qt 6 for the Buildroot package isn't straightforward
though as we're hitting a meson bug[1].

For now, let's just always disable qcam until we can get everything
fixed and migrated properly.

[1] https://github.com/mesonbuild/meson/issues/13018

Fixes: 72757d111a5d ("package/libcamera: bump to version 0.3.2")
Signed-off-by: Quentin Schulz <quentin.schulz@cherry.de>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit 1c653dd19f531f66601faf109db1817b0b2141be)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libcamera/libcamera.mk

@@ -18,6 +18,7 @@ LIBCAMERA_DEPENDENCIES = \
 LIBCAMERA_CONF_OPTS = \
 	-Dandroid=disabled \
 	-Ddocumentation=disabled \
+	-Dqcam=disabled \
 	-Dtest=false \
 	-Dwerror=false
 LIBCAMERA_INSTALL_STAGING = YES
@@ -83,16 +84,6 @@ LIBCAMERA_CONF_OPTS += -Dgstreamer=enabled
 LIBCAMERA_DEPENDENCIES += gstreamer1 gst1-plugins-base
 endif
 
-ifeq ($(BR2_PACKAGE_QT5BASE_WIDGETS),y)
-LIBCAMERA_CONF_OPTS += -Dqcam=enabled
-LIBCAMERA_DEPENDENCIES += qt5base
-ifeq ($(BR2_PACKAGE_QT5TOOLS_LINGUIST_TOOLS),y)
-LIBCAMERA_DEPENDENCIES += qt5tools
-endif
-else
-LIBCAMERA_CONF_OPTS += -Dqcam=disabled
-endif
-
 ifeq ($(BR2_PACKAGE_LIBEVENT),y)
 LIBCAMERA_CONF_OPTS += -Dcam=enabled
 LIBCAMERA_DEPENDENCIES += libevent