arm: vf610: add enet1 support

This patch contains several changes required for second Ethernet
(enet1/RMII1) port on vf610
- ANADIG PLL5 control definitions required for Ethernet RMII1 clock
- Secondary Ethernet (enet1) MAC RMII1 base address definition
- RMII1 iomux definitions
- VF610_PAD_PTA6__RMII0_CLKOUT iomux definition required for
  internal (e.g. crystal-less) Ethernet clocking.

Signed-off-by: Marcel Ziswiler <marcel@ziswiler.com>
[stefan@agner.ch: regrouped patch]
Signed-off-by: Stefan Agner <stefan@agner.ch>
diff --git a/arch/arm/include/asm/arch-vf610/crm_regs.h b/arch/arm/include/asm/arch-vf610/crm_regs.h
index 04cc5bc..e17c7d1 100644
--- a/arch/arm/include/asm/arch-vf610/crm_regs.h
+++ b/arch/arm/include/asm/arch-vf610/crm_regs.h
@@ -187,6 +187,10 @@
 #define CCM_CCGR9_FEC0_CTRL_MASK		0x3
 #define CCM_CCGR9_FEC1_CTRL_MASK		(0x3 << 2)
 
+#define ANADIG_PLL5_CTRL_BYPASS                 (1 << 16)
+#define ANADIG_PLL5_CTRL_ENABLE                 (1 << 13)
+#define ANADIG_PLL5_CTRL_POWERDOWN              (1 << 12)
+#define ANADIG_PLL5_CTRL_DIV_SELECT		1
 #define ANADIG_PLL2_CTRL_ENABLE			(1 << 13)
 #define ANADIG_PLL2_CTRL_POWERDOWN		(1 << 12)
 #define ANADIG_PLL2_CTRL_DIV_SELECT		1