ARM: dts: uniphier: drop u-boot, dm-pre-reloc from SD/eMMC clock node

Now that the SD/eMMC driver does not use the clock driver in SPL,
remove u-boot,dm-pre-reloc properties to let the fdtgrep tool drop
the unnecessary nodes.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

arch/arm/dts/uniphier-v7-u-boot.dtsi

@@ -14,22 +14,6 @@
 			u-boot,dm-pre-reloc;
 		};
 
-		mioctrl@59810000 {
-			u-boot,dm-pre-reloc;
-
-			clock {
-				u-boot,dm-pre-reloc;
-			};
-		};
-
-		sdctrl@59810000 {
-			u-boot,dm-pre-reloc;
-
-			clock {
-				u-boot,dm-pre-reloc;
-			};
-		};
-
 		soc-glue@5f800000 {
 			u-boot,dm-pre-reloc;