qr: remove microQR layer

MicroQR (MQR) is not widely supported and is superficial to our use
in the kernel. Hence, remove it.

Signed-off-by: Levente Kurusa <levex@linux.com>
qr: print_oops: actually disable the qr encoding when a bug occurs

I forgot to actually disable the qr encoding...

Signed-off-by: Levente Kurusa <levex@linux.com>
qr: qrspec: use kzalloc instead of kmalloc + memset

Signed-off-by: Levente Kurusa <levex@linux.com>
MAINTAINERS: add entry for the QR library and its stuff

Needs-to-be-Acked-by: Teodora Baluta <teobaluta@gmail.com>
Signed-off-by: Levente Kurusa <levex@linux.com>
Merge pull request #8 from levex/for-teodora-mqr

Remove MicroQR
Merge pull request #12 from levex/for-teodora-misc

Merge miscellaneous changes.