imx: clock support enet2 anatop clock support

To i.MX6SX/UL, two ethernet interfaces are supported.
Add ENET2 clock support:
1. Introduce a new input parameter "fec_id", only 0 and 1 are allowed.
   To value 1, only i.MX6SX/UL can pass the check.
2. Modify board code who use this api to follow new api prototype.

Signed-off-by: Peng Fan <Peng.Fan@freescale.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Stefan Roese <sr@denx.de>
Cc: Nikolaos Pasaloukos <Nikolaos.Pasaloukos@imgtec.com>
Cc: Stefano Babic <sbabic@denx.de>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/arch/arm/include/asm/arch-mx6/clock.h b/arch/arm/include/asm/arch-mx6/clock.h
index 7b3bbb8..2b220d6 100644
--- a/arch/arm/include/asm/arch-mx6/clock.h
+++ b/arch/arm/include/asm/arch-mx6/clock.h
@@ -64,7 +64,7 @@
 int enable_i2c_clk(unsigned char enable, unsigned i2c_num);
 int enable_spi_clk(unsigned char enable, unsigned spi_num);
 void enable_ipu_clock(void);
-int enable_fec_anatop_clock(enum enet_freq freq);
+int enable_fec_anatop_clock(int fec_id, enum enet_freq freq);
 void enable_enet_clk(unsigned char enable);
 void enable_qspi_clk(int qspi_num);
 void enable_thermal_clk(void);
diff --git a/arch/arm/include/asm/arch-mx6/crm_regs.h b/arch/arm/include/asm/arch-mx6/crm_regs.h
index fe75da4..10306cd 100644
--- a/arch/arm/include/asm/arch-mx6/crm_regs.h
+++ b/arch/arm/include/asm/arch-mx6/crm_regs.h
@@ -1052,6 +1052,12 @@
 #define BF_ANADIG_PLL_ENET_DIV_SELECT(v)  \
 	(((v) << 0) & BM_ANADIG_PLL_ENET_DIV_SELECT)
 
+/* ENET2 for i.MX6SX/UL */
+#define BM_ANADIG_PLL_ENET2_ENABLE 0x00100000
+#define BM_ANADIG_PLL_ENET2_DIV_SELECT 0x0000000C
+#define BF_ANADIG_PLL_ENET2_DIV_SELECT(v)  \
+	(((v) << 2) & BM_ANADIG_PLL_ENET2_DIV_SELECT)
+
 #define BM_ANADIG_PFD_480_PFD3_CLKGATE 0x80000000
 #define BM_ANADIG_PFD_480_PFD3_STABLE 0x40000000
 #define BP_ANADIG_PFD_480_PFD3_FRAC      24