hw/sd/sdhci: Fix TYPE_IMX_USDHC to implement sd-spec-version 3 by default

Fixes TYPE_FSL_IMX6UL, TYPE_FSL_IMX7, and TYPE_FSL_IMX8MP to implement
version 3 of the SD specification.

Note that TYPE_FSL_IMX6 already had "sd-spec-version" set accordingly and
that TYPE_FSL_IMX25 correctly sets the same property to version 2 since the
real hardware is an eSDHC which is the uSDHC's predecessor.

Fixes: fd1e5c8179 ("sdhci: Add i.MX specific subtype of SDHCI")
cc: qemu-stable
Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: BALATON Zoltan <balaton@eik.bme.hu>
Message-ID: <20260112145418.220506-2-shentey@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

hw/sd/sdhci.c

@@ -1884,9 +1884,11 @@ static const MemoryRegionOps usdhc_mmio_ops = {
 static void imx_usdhc_init(Object *obj)
 {
     SDHCIState *s = SYSBUS_SDHCI(obj);
+    DeviceState *dev = DEVICE(obj);
 
     s->io_ops = &usdhc_mmio_ops;
     s->quirks = SDHCI_QUIRK_NO_BUSY_IRQ;
+    qdev_prop_set_uint8(dev, "sd-spec-version", 3);
 }
 
 /* --- qdev Samsung s3c --- */