arm64: dts: amd: adjust whitespace around '='

Fix whitespace coding style: use single space instead of tabs or
multiple spaces around '=' sign in property assignment. No functional
changes (same DTB).

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

arch/arm64/boot/dts/amd/amd-overdrive-rev-b0.dts

···
 	};
 
 	psci {
-		compatible   = "arm,psci-0.2";
-		method       = "smc";
+		compatible = "arm,psci-0.2";
+		method = "smc";
 	};
 };
 

arch/arm64/boot/dts/amd/amd-overdrive-rev-b1.dts

···
 	};
 
 	psci {
-		compatible   = "arm,psci-0.2";
-		method       = "smc";
+		compatible = "arm,psci-0.2";
+		method = "smc";
 	};
 };