[ARM] Ensure transmit lines are held in mark state.

arch/arm/mach-sa1100/assabet.c

@@ -117,6 +117,8 @@ static int __init assabet_init(void)
 	PGSR = 0;
 	PCFR = 0;
 	PSDR = 0;
+	PPDR |= PPC_TXD3 | PPC_TXD1;
+	PPSR |= PPC_TXD3 | PPC_TXD1;
 
 	sa1100fb_lcd_power = assabet_lcd_power;
 	sa1100fb_backlight_power = assabet_backlight_power;