ARM: dts: exynos: remove deprecated unit address for LPDDR3 timings on Odroid

Passing maximum frequency of LPDDR3 memory timings as unit address was
deprecated in favor of 'max-freq' property.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Reviewed-by: Dmitry Osipenko <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

arch/arm/boot/dts/exynos5422-odroid-core.dtsi

···
 		compatible	= "samsung,K3QF2F20DB", "jedec,lpddr3";
 		density		= <16384>;
 		io-width	= <32>;
-		#address-cells	= <1>;
-		#size-cells	= <0>;
 
 		tRFC-min-tck		= <17>;
 		tRRD-min-tck		= <2>;
···
 		tCKESR-min-tck		= <2>;
 		tMRD-min-tck		= <5>;
 
-		timings_samsung_K3QF2F20DB_800mhz: timings@800000000 {
+		timings_samsung_K3QF2F20DB_800mhz: timings {
 			compatible	= "jedec,lpddr3-timings";
-			/* workaround: 'reg' shows max-freq */
-			reg		= <800000000>;
+			max-freq	= <800000000>;
 			min-freq	= <100000000>;
 			tRFC		= <65000>;
 			tRRD		= <6000>;