MAINTAINERS: Add Joyce Ooi as Altera PCIe maintainer

Ley Foon Tan has moved to a different role, so add Joyce Ooi as Altera PCIe
maintainer.

The rfi@lists.rocketboards.org mailing list seems to be dead, so drop it.

[bhelgaas: drop rfi@lists.rocketboards.org]
Link: https://lore.kernel.org/r/20210701065247.152292-1-joyce.ooi@intel.com


Signed-off-by: Joyce Ooi <joyce.ooi@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>