ARM: dts: BCM5301X: Specify flash partitions

Most devices use Broadcom standard partitions which allows them to be
described with the "brcm,bcm947xx-cfe-partitions". Exceptions are:
1) TP-LINK devices which use "os-image" partition with TRX containing
   kernel only + separated rootfs partition.
2) Asus RT-AC87U with custom "asus" partition.

This commit also removes undocumented and unsupported linux,part-probe
binding which got accidentally upstreamed while describing SPI
controller.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
diff --git a/arch/arm/boot/dts/bcm5301x.dtsi b/arch/arm/boot/dts/bcm5301x.dtsi
index bc607d1..7a5c188 100644
--- a/arch/arm/boot/dts/bcm5301x.dtsi
+++ b/arch/arm/boot/dts/bcm5301x.dtsi
@@ -475,8 +475,11 @@
 			compatible = "jedec,spi-nor";
 			reg = <0>;
 			spi-max-frequency = <20000000>;
-			linux,part-probe = "ofpart", "bcm47xxpart";
 			status = "disabled";
+
+			partitions {
+				compatible = "brcm,bcm947xx-cfe-partitions";
+			};
 		};
 	};