scsi: MAINTAINERS: Update Marvell owned driver maintainers

Update Marvell owned driver maintainers and add Marvell Upstream email
alias to the maintainers list.

Link: https://lore.kernel.org/r/20200902073430.11787-1-njavali@marvell.com


Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>