scsi: MAINTAINERS: Add reviewers for UFS patches

According to git log and the linux-scsi archives, Vinayak has been inactive
for several years. Removing him as maintainer will make the
get_maintainer.pl script generate an extensive list of recipients.  Add
three reviewers as well to vet future UFS patches.
Signed-off-by: Marc Gonzalez <marc.w.gonzalez@free.fr>
Acked-by: Joao Pinto <jpinto@synopsys.com>
Acked-by: Avri Altman <avri.altman@wdc.com>
Acked-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

MAINTAINERS

@@ -15666,7 +15666,9 @@ F:	drivers/visorbus/
 F:	drivers/staging/unisys/
 
 UNIVERSAL FLASH STORAGE HOST CONTROLLER DRIVER
-M:	Vinayak Holikatti <vinholikatti@gmail.com>
+R:	Alim Akhtar <alim.akhtar@samsung.com>
+R:	Avri Altman <avri.altman@wdc.com>
+R:	Pedro Sousa <pedrom.sousa@synopsys.com>
 L:	linux-scsi@vger.kernel.org
 S:	Supported
 F:	Documentation/scsi/ufs.txt