rockchip: rk3399: boot_devices: fix eMMC node name

When idbloader.img is flashed on the eMMC, the SPL still tries to load
from SPI-NOR first.

This is due to an incorrect look-up in the Device Tree. Since commit
822556a93459 ("arm: dts: sync the Rockhip 3399 SoCs from Linux"), the
node name (but not label) changed from sdhci@fe330000 to mmc@fe330000
meaning U-Boot SPL is not looking for the correct node name anymore and
fails to find the "same-as-spl" node when eMMC is the medium from which
the SPL booted.

Fixes: 822556a93459 ("arm: dts: sync the Rockhip 3399 SoCs from Linux")
Cc: Quentin Schulz <foss+uboot@0leil.net>
Signed-off-by: Quentin Schulz <quentin.schulz@theobroma-systems.com>
Reviewed-by: Xavier Drudis Ferran <xdrudis@tinet.cat>
Reviewed-by: Artem Lapkin  <email2tema@gmail.com>
Tested-by: Artem Lapkin  <email2tema@gmail.com>
Tested-by: Lapkin Artem <email2tema@gmail.com>
Tested-by: Lapkin Artem <email2tema@gmail.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/arch/arm/mach-rockchip/rk3399/rk3399.c b/arch/arm/mach-rockchip/rk3399/rk3399.c
index 01a0559..de11a3f 100644
--- a/arch/arm/mach-rockchip/rk3399/rk3399.c
+++ b/arch/arm/mach-rockchip/rk3399/rk3399.c
@@ -27,7 +27,7 @@
 #define GRF_BASE	0xff770000
 
 const char * const boot_devices[BROM_LAST_BOOTSOURCE + 1] = {
-	[BROM_BOOTSOURCE_EMMC] = "/sdhci@fe330000",
+	[BROM_BOOTSOURCE_EMMC] = "/mmc@fe330000",
 	[BROM_BOOTSOURCE_SPINOR] = "/spi@ff1d0000/flash@0",
 	[BROM_BOOTSOURCE_SD] = "/mmc@fe320000",
 };
@@ -181,7 +181,7 @@
 		const char *ofpath;
 	} spl_boot_devices_tbl[] = {
 		{ BOOT_DEVICE_MMC1, "/mmc@fe320000" },
-		{ BOOT_DEVICE_MMC2, "/sdhci@fe330000" },
+		{ BOOT_DEVICE_MMC2, "/mmc@fe330000" },
 		{ BOOT_DEVICE_SPI, "/spi@ff1d0000" },
 	};