ns16550: correct name/value pair parsing for PCI port/bridge

ns16550: correct name/value pair parsing for PCI port/bridge

First of all these were inverted: "bridge=" caused the port coordinates
to be established, while "port=" controlled the bridge coordinates. And
then the error messages being identical also wasn't helpful. While
correcting this also move both case blocks close together.

Fixes: 97fd49a7e074 ("ns16550: add support for UART parameters to be specifed with name-value pairs")
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Andrew Cooper <andrew.cooper3@citrix.com>
master commit: e692b22230b411d762ac9e278a398e28df474eae
master date: 2023-03-29 14:55:37 +0200