linux-yocto/6.1: fix intermittent x86 boot hangs

linux-yocto/6.1: fix intermittent x86 boot hangs

The commit in question appeared as -stable backport in 6.1.28, which is
where we started to see intermittent boot hangs on x86.

Richard noted that others are seeing this is well, as can be seen in
this thread:

    https://lkml.org/lkml/2023/6/13/1460

We bump our SRCREVs to pick up the revert:

    947f660bde07 Revert "tick/common: Align tick period with the HZ tick."

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>