Add BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_6_6 to prevent error: Incorrect selection of kernel headers: expected 6.8.x, got 6.6.x Fixes: https://gitlab.com/buildroot.org/buildroot/-/jobs/6498278078 Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>