accel/amdxdna: Add basic support for AIE4 devices

accel/amdxdna: Add basic support for AIE4 devices

Add initial support for AIE4 devices (PCI device IDs 0x17F2 and 0x1B0B),
including:
  Device initialization
  Basic mailbox communication
  SR-IOV enablement

This lays the groundwork for full AIE4 support.

Co-developed-by: Hayden Laccabue <Hayden.Laccabue@amd.com>
Signed-off-by: Hayden Laccabue <Hayden.Laccabue@amd.com>
Signed-off-by: David Zhang <yidong.zhang@amd.com>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Signed-off-by: Lizhi Hou <lizhi.hou@amd.com>
Link: https://patch.msgid.link/20260330163705.3153647-3-lizhi.hou@amd.com