ARM: dts: tbs2910: rename MMC node aliases

to be consistent with kernel versions up to v5.9 (mmc aliases not used here).
usdhc1 is not wired up on this board and therefore cannot be used.
Start mmc aliases with usdhc2.
Signed-off-by: NSoeren Moch <smoch@web.de>
Cc: stable@vger.kernel.org                # 5.10.x
Signed-off-by: NShawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx6q-tbs2910.dts

@@ -16,6 +16,13 @@
 		stdout-path = &uart1;
 	};
 
+	aliases {
+		mmc0 = &usdhc2;
+		mmc1 = &usdhc3;
+		mmc2 = &usdhc4;
+		/delete-property/ mmc3;
+	};
+
 	memory@10000000 {
 		device_type = "memory";
 		reg = <0x10000000 0x80000000>;