phy: berlin-usb: adjust USB_PHY_RX_CTRL init flags

Make the value written into the USB_PHY_RX_CTRL configuration register
match 0xAA79 value written by manufacturer-supplied kernels for Sony
NSZ-GS7 (Berlin2 SoC), Google Chromecast and Valve Steam Link (BG2CD).

This fixes timeouts communicating to the internal hub on Steam Link.

Cc: Kishon Vijay Abraham I <kishon@ti.com>
Cc: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: Alexander Monakov <amonakov@ispras.ru>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>

drivers/phy/marvell/phy-berlin-usb.c

@@ -127,7 +127,7 @@ static int phy_berlin_usb_power_on(struct phy *phy)
 	writel(V2I_VCO_RATIO(0x5) | R_ROTATE_0 | ANA_TEST_DC_CTRL(0x5),
 	       priv->base + USB_PHY_ANALOG);
 	writel(PHASE_FREEZE_DLY_4_CL | ACK_LENGTH_16_CL | SQ_LENGTH_12 |
-	       DISCON_THRESHOLD_260 | SQ_THRESHOLD(0xa) | LPF_COEF(0x2) |
+	       DISCON_THRESHOLD_270 | SQ_THRESHOLD(0xa) | LPF_COEF(0x2) |
 	       INTPL_CUR_30, priv->base + USB_PHY_RX_CTRL);
 
 	writel(TX_VDD12_13 | TX_OUT_AMP(0x3), priv->base + USB_PHY_TX_CTRL1);