The Null-terminated Unicode string used to fill in the ImageIdName field of
the EFI_FIRMWARE_IMAGE_DESCRIPTOR structure that is returned by the
GetImageInfo() service of the Firmware Management Protocol for the firmware
device. An ImageIdName string must be provided for each firmware device.
The default value is an empty string.
Firmware Device ImageIdName string.

PCD Information

Name	Token Space	Token number	Data Type	Default Value
PcdFmpDeviceImageIdName	gFmpDevicePkgTokenSpaceGuid	0x40000007	VOID*	L""