ufs: Add a PCI based UFS controller driver

This adds a simple PCI based UFS controller driver with a QEMU
emulated UFS controller on the PCI bus.

Requiring QEMU v8.2+.

Signed-off-by: Bin Meng <bmeng@tinylab.org>
Reviewed-by: Neha Malcom Francis <n-francis@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/ufs/Makefile b/drivers/ufs/Makefile
index 4f3344f..13f1e68 100644
--- a/drivers/ufs/Makefile
+++ b/drivers/ufs/Makefile
@@ -6,4 +6,5 @@
 obj-$(CONFIG_UFS) += ufs.o ufs-uclass.o
 obj-$(CONFIG_CADENCE_UFS) += cdns-platform.o
 obj-$(CONFIG_TI_J721E_UFS) += ti-j721e-ufs.o
+obj-$(CONFIG_UFS_PCI) += ufs-pci.o
 obj-$(CONFIG_UFS_RENESAS) += ufs-renesas.o