More Qualcomm driver updates for 5.13

This improves the Qualcomm SCM driver logic related to detecting the
calling convention, in particular on SC7180, and fixes a few small
issues in the same.

It introduces additonal sanity checks of the size of loaded segments in
the MDT loader and adds a missing error in the return path of
pdr_register_listener().

It makes it possible to specify the OEM specific firmware path in the
wcn36xx control (and WiFi) driver.

Lastly it adds a missing path specifier in the MAINTAINERS' entry and
fixes a bunch of kerneldoc issues in various drivers.
-----BEGIN PGP SIGNATURE-----

iQJPBAABCAA5FiEEBd4DzF816k8JZtUlCx85Pw2ZrcUFAmBwfnAbHGJqb3JuLmFu
ZGVyc3NvbkBsaW5hcm8ub3JnAAoJEAsfOT8Nma3F1CEP/R8ZxRwzXdKUpS+SCzLp
lJoqE+bhNt7IbK4hVfw1poA+UW8iQN0xkHS/JIbAvEBefRxJ/6dikrli/6oqQM9u
0kIpWHp30QyFOt+i8VEzhLZrNZblFmlHu+AtYjicoGftNdsF1p6TKESzoEUXM+Bo
/m0c9Wuf00CQl+6E6/GrV04MnAJXehWum+c1BsD9drs1Er9A2BxHo/8KQmrzmagl
cOsEh1k1PDSUhUSbbCFSqzGweShXY1R9K+UKz0KKJPW3/Wduzd+wJ6eXCiDJEZvY
yq7Yim7hS3C8JjSoWipaNkUZFlnwgJs3BZnYcTPKv8esX+XxGUAp/fAE2/qizswv
D6rKc876xyHMcFvh+9eXPYnXQgE3vg5Jt0Yqf/oc8iuvYncqYtf+SdrLvD5o8jEY
GW7gIxeGRQ4cnQWoArj33usevxqLdiPp2tAliztxfEjUhNDJwm2MWPJzLgUW0BJ8
grEl5kfkU6Q90F3NW5gObq1uVFbfF0nTxeyEbC1mIJ8/78xINh4SLnSy8fmcjNT4
ZfPCX6sb45baYqpe7N5AeuXWXDMkl+pjQXU5UGyp2ZLDisCQlXmo1fj6hOk6tL5P
uC1UYYaZaBBMpqEyCDyhk1Xe0POZSlHjx2nVhDL0JrZic7KbjlRhz9/RNO+Wonhs
ypQ51qoAXeJu1PISHGmhRWwA
=C6IS
-----END PGP SIGNATURE-----