debian/libam7xxx0.1-doc.*: additional doc is now installed in the main package

debian/libam7xxx0.1-doc.*: additional doc is now installed in the main package

debhelper >= 11 installs the files provide by the documentation package
in /usr/share/doc/main-package as recommended by the Debian policy
manual 3.9.7 in S12.3.

Adjust the paths in the lintian overrides and most importantly in the
.doc-base references to fix the following lintian errors caused by the
new behavior:

E: libam7xxx0.1-doc: doc-base-file-references-missing-file libam7xxx:9 /usr/share/doc/libam7xxx0.1-doc/html/index.html
N:
N:    One of the files referenced in an Index or Files field in this doc-base
N:    control file does not exist in the package. The doc-base control files
N:    should be installed by the package that provides the documents they are
N:    registering.
N:
N:    Severity: important, Certainty: certain
N:
N:    Check: menus, Type: binary
N:
E: libam7xxx0.1-doc: doc-base-file-references-missing-file libam7xxx:10 /usr/share/doc/libam7xxx0.1-doc/html/*.html