linux-gcw0_3.12: update defconfig

Follow upstream changes.
Add CONFIG_KEXEC=y

Signed-off-by: Andrea Adami <andrea.adami@gmail.com>
linux-gcw0-kexecboot_3.12: update defconfig

Follow upstream changes.

While there, fix a potential issue with do_package_qa
like done in meta-initramfs for the main -kexecboot kernel.

Signed-off-by: Andrea Adami <andrea.adami@gmail.com>