usb: r8a66597: Fix initialization hub that using R8A66597_MAX_ROOT_HUB

This driver is processed as two USB hub despite one.
The number of root hub is defined in R8A66597_MAX_ROOT_HUB.
This fixes that register is accessed by using the definition
of R8A66597_MAX_ROOT_HUB.

Signed-off-by: Yasuhisa Umano <yasuhisa.umano.zc@renesas.com>

drivers/usb/host/r8a66597-hcd.c

@@ -164,8 +164,8 @@ static int enable_controller(struct r8a66597 *r8a66597)
 
 	r8a66597_bset(r8a66597, INTL, SOFCFG);
 	r8a66597_write(r8a66597, 0, INTENB0);
-	r8a66597_write(r8a66597, 0, INTENB1);
-	r8a66597_write(r8a66597, 0, INTENB2);
+	for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
+		r8a66597_write(r8a66597, 0, get_intenb_reg(port));
 
 	r8a66597_bset(r8a66597, CONFIG_R8A66597_ENDIAN & BIGEND, CFIFOSEL);
 	r8a66597_bset(r8a66597, CONFIG_R8A66597_ENDIAN & BIGEND, D0FIFOSEL);