generic: init_scripts: /sbin/hwclock --systohc can fail

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
chroot: rename boot_scripts.sh/boot_scripts.conf -> generic-boot-script.sh/generic-boot-script.conf

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
bb.org: make sure to install the third_party_modules

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>