powerpc: fix 32-bit KVM-PR lockup and panic with MacOS guest

[Michael Ellerman]

On Fri, 2019-02-08 at 14:33:19 UTC, Mark Cave-Ayland wrote:
> Commit 8792468da5e1 "powerpc: Add the ability to save FPU without giving it up"
> unexpectedly removed the MSR_FE0 and MSR_FE1 bits from the bitmask used to
> update the MSR of the previous thread in __giveup_fpu() causing a KVM-PR MacOS
> guest to lockup and panic the kernel.
> 
> Reinstate these bits to the MSR bitmask to enable MacOS guests to run under
> 32-bit KVM-PR once again without issue.
> 
> Signed-off-by: Mark Cave-Ayland <mark.cave-ayland at ilande.co.uk>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/fe1ef6bcdb4fca33434256a802a3ed6a

cheers