MAINTAINERS: Add PCI MHI endpoint function driver under MHI bus

Add PCI endpoint driver for MHI bus under the MHI bus entry in MAINTAINERS
file.

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Manivannan Sadhasivam <[email protected]>
Signed-off-by: Lorenzo Pieralisi <[email protected]>
Signed-off-by: Bjorn Helgaas <[email protected]>
Reviewed-by: Damien Le Moal <[email protected]>

Author: Mani-Sadhasivam

MAINTAINERS

@@ -13629,6 +13629,7 @@ T:	git git://git.kernel.org/pub/scm/linux/kernel/git/mani/mhi.git
 F:	Documentation/ABI/stable/sysfs-bus-mhi
 F:	Documentation/mhi/
 F:	drivers/bus/mhi/
+F:	drivers/pci/endpoint/functions/pci-epf-mhi.c
 F:	include/linux/mhi.h
 
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