minnow: lock down the linux-yocto kernel for release

JIRA: SB-3132

Signed-off-by: Christopher Larson <kergoth@gmail.com>
qemu{arm,ppc,x86}: lock down kernels for release

JIRA: SB-3132

Signed-off-by: Christopher Larson <kergoth@gmail.com>
linux-minnow: also lock down preempt-rt

JIRA: SB-3132

Signed-off-by: Christopher Larson <kergoth@gmail.com>
linux-qoriq-sdk{,-headers}: lockdown for release

JIRA: SB-3132

Signed-off-by: Christopher Larson <kergoth@gmail.com>
Merge pull request #244 from kergoth/sb-3132

Lock down kernels for release