[Buildroot] [PATCH] qemu: security bump to 2.12.1

[Peter Korsgaard]

>>>>> "Peter" == Peter Korsgaard <peter at korsgaard.com> writes:

 > From the release notes:
 > This update contains new mitigation functionality for CVE-2018-3639
 > (Speculative Store Bypass) in x86. There are also bug fixes for
 > migration, Intel IOMMU emulation, block layer/image handling, ARM
 > emulation, and various other areas.

 > https://www.mail-archive.com/qemu-devel@nongnu.org/msg553574.html

 > Signed-off-by: Peter Korsgaard <peter at korsgaard.com>

Committed to 2018.02.x and 2018.08.x, thanks.

-- 
Bye, Peter Korsgaard