arm: dts: Add mmc[01] aliases to am33xx.dtsi

This change provides similar aliases definitions as now present in
Linux kernel v5.16.9 for am33xx.dtsi file.

Signed-off-by: Lukasz Majewski <lukma@denx.de>
diff --git a/arch/arm/dts/am33xx.dtsi b/arch/arm/dts/am33xx.dtsi
index b509302..5f9b306 100644
--- a/arch/arm/dts/am33xx.dtsi
+++ b/arch/arm/dts/am33xx.dtsi
@@ -40,6 +40,8 @@
 		ethernet1 = &cpsw_emac1;
 		spi0 = &spi0;
 		spi1 = &spi1;
+		mmc0 = &mmc1;
+		mmc1 = &mmc2;
 	};
 
 	cpus {