[ACTIVITY] report week ending 23 Mar

[Peter Maydell]

Progress:
* VIRT-65 [QEMU upstream maintainership]
+ raspi3: came up with plausible fix for sd controller model that makes
Linux driver work. Unfortunately it's pure guesswork since there's
no public documentation for the hardware :-(
+ drafted a blog post describing booting Linux on the raspi3 model
(for publication once we've got the sdcard fix in master)
+ tagged 2.12.0 rc0 (first release candidate), various other release work
* VIRT-164 [improve Cortex-M emulation]
+ a little more progress with the stack-limit checking feature

thanks
-- PMM