arm64: mvebu: armada-8040-db.dts: Add I2C and SPI aliases

Add I2C and SPI aliases to enable usage in U-Boot. Otherwise U-Boot will
not be able to use the SPI NOR chip for environment storage and use
"i2c dev 0" to select this I2C bus.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Nadav Haklai <nadavh@marvell.com>
Cc: Neta Zur Hershkovits <neta@marvell.com>
Cc: Kostya Porotchkin <kostap@marvell.com>
Cc: Omri Itach <omrii@marvell.com>
Cc: Igal Liberman <igall@marvell.com>
Cc: Haim Boot <hayim@marvell.com>
Cc: Hanna Hawa <hannah@marvell.com>

arch/arm/dts/armada-8040-db.dts

@@ -55,6 +55,11 @@
 		stdout-path = "serial0:115200n8";
 	};
 
+	aliases {
+		i2c0 = &cpm_i2c0;
+		spi0 = &spi0;
+	};
+
 	memory@00000000 {
 		device_type = "memory";
 		reg = <0x0 0x0 0x0 0x80000000>;