usb: phytium: Fix wrong assign logic in hostErrorIrq

We'll apply a bitwise AND to the controller's rxerrirq and rxerrien
to isolate interrupts that are both triggered and enabled.
This filtering ensures that we only process relevant interrupts.

Self bitwise AND operations are meaningless.

Fix follow error with clang-19:

drivers/usb/phytium/host.c:451:11: error: explicitly assigning value of variable of type 'uint16_t' (aka 'unsigned short') to itself [-Werror,-Wself-assign]
  451 |         rxerrirq &= rxerrirq;
      |         ~~~~~~~~ ^  ~~~~~~~~
1 error generated.

Signed-off-by: WangYuli <[email protected]>

drivers/usb/phytium/host.c

@@ -448,7 +448,7 @@ static void hostErrorIrq(struct HOST_CTRL *priv)
 
 	rxerrirq = phytium_read16(&priv->regs->rxerrirq);
 	rxerrien = phytium_read16(&priv->regs->rxerrien);
-	rxerrirq &= rxerrirq;
+	rxerrirq &= rxerrien;
 	if (!txerrirq && !rxerrirq)
 		return;