SFH: Add maintainers and documentation for AMD SFH based on HID framework

Add Maintainers for AMD SFH(SENSOR FUSION HUB) Solution and work flow
document.

Co-developed-by: Nehal Shah <Nehal-bakulchandra.Shah@amd.com>
Signed-off-by: Nehal Shah <Nehal-bakulchandra.Shah@amd.com>
Signed-off-by: Sandeep Singh <sandeep.singh@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

Documentation/hid/index.rst

@@ -16,3 +16,4 @@ Human Interface Devices (HID)
 
    hid-alps
    intel-ish-hid
+   amd-sfh-hid

MAINTAINERS

@@ -950,6 +950,14 @@ S:	Supported
 F:	arch/arm64/boot/dts/amd/amd-seattle-xgbe*.dtsi
 F:	drivers/net/ethernet/amd/xgbe/
 
+AMD SENSOR FUSION HUB DRIVER
+M:	Nehal Shah <nehal-bakulchandra.shah@amd.com>
+M:	Sandeep Singh <sandeep.singh@amd.com>
+L:	linux-input@vger.kernel.org
+S:	Maintained
+F:	Documentation/hid/amd-sfh*
+F:	drivers/hid/amd-sfh-hid/
+
 AMS AS73211 DRIVER
 M:	Christian Eggers <ceggers@arri.de>
 L:	linux-iio@vger.kernel.org