treewide: fix some cosmetic glitches in dts files

- fix single spaces hidden by a tab
- replace indentation with spaces by tabs
- make empty lines empty
- drop trailing whitespace
- drop unnecessary blank lines

Signed-off-by: Mathias Kresin <dev@kresin.me>
Signed-off-by: Paul Wassi <p.wassi@gmx.at>

target/linux/ath79/dts/ar7161_dlink_dir-825-b1.dts

@@ -85,7 +85,6 @@
 			default-state = "off";
 			linux,default-trigger = "phy1tpt";
 		};
-
 	};
 
 	keys {
@@ -125,7 +124,6 @@
 				phy-mode = "rgmii";
 			};
 		};
-	
 	};
 };
 
@@ -181,7 +179,7 @@
 };
 
 &pll {
-    clocks = <&extosc>;
+	clocks = <&extosc>;
 };
 
 &spi {
@@ -239,7 +237,6 @@
 		speed = <1000>;
 		full-duplex;
 	};
-
 };
 
 &eth1 {
@@ -247,5 +244,4 @@
 	pll-data = <0x11110000 0x00001099 0x00991099>;
 
 	phy-handle = <&phy4>;
-
 };