HID: logitech-hidpp: Rename HID++ "internal" error constant

As per the upstream "hidpp" helpers commit:
"
There has been some confusion about error value 5 but feature specs that
refer to it generally use NOT_ALLOWED.
"

Signed-off-by: Bastien Nocera <hadess@hadess.net>
Link: https://github.com/mrubli2/hidpp/commit/80c3fecfcd89c5efe0f16feabe90a55ddfd25aaa


Signed-off-by: Jiri Kosina <jkosina@suse.cz>