ARM: dts: porter: remove enable prop from HS-USB device node

In the final versions of the Porter board (called "PORTER_C") Renesas
decided to get rid of the Maxim Integrated MAX3355 OTG chip and didn't
add any other provision to differ the host/gadget mode, so we'll have to
remove no longer valid "renesas,enable-gpio" property from the HS-USB
device node. Hopefully, the earlier revisions of the board were never
seen in the wild...

Fixes: c794f6a09a25 ("ARM: shmobile: porter: add HS-USB DT support")
Reported-by: Yoshihiro Shimoda <[e-mail]>
Signed-off-by: Sergei Shtylyov <[e-mail]>
Signed-off-by: Simon Horman <[e-mail]>

arch/arm/boot/dts/r8a7791-porter.dts

···
 	pinctrl-names = "default";
 
 	status = "okay";
-	renesas,enable-gpio = <&gpio5 31 GPIO_ACTIVE_HIGH>;
 };
 
 &usbphy {