ARM: dts: uniphier: remove U-Boot own EEPROM compatible and property

The compatible string "i2c-eeprom" is U-Boot own compatible, which
has never been approved by the DT community. "u-boot,i2c-offset-len"
is also a U-Boot own hack.

Linux adds "atmel,*" as generic compatibles, and U-Boot also followed
it by commit d7e28918aa3f ("i2c_eeprom: Add reading support").

The U-Boot own hack is no longer needed. Just sync with Linux.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/arch/arm/dts/uniphier-pro4-sanji.dts b/arch/arm/dts/uniphier-pro4-sanji.dts
index 686dd3a..3b68a7c 100644
--- a/arch/arm/dts/uniphier-pro4-sanji.dts
+++ b/arch/arm/dts/uniphier-pro4-sanji.dts
@@ -45,10 +45,9 @@
 	status = "okay";
 
 	eeprom@54 {
-		compatible = "st,24c64", "atmel,24c64", "i2c-eeprom";
+		compatible = "st,24c64", "atmel,24c64";
 		reg = <0x54>;
 		pagesize = <32>;
-		u-boot,i2c-offset-len = <2>;
 	};
 };