board: sama5d3_xplained: Clean up code

Due to the introduction of the pinctrl and clk driver, and using
device tree files, remove the unneeded hardcoded pin configuration
and clock enabling code from the board file.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>

board/atmel/sama5d3_xplained/sama5d3_xplained.c

@@ -6,16 +6,12 @@
  */
 
 #include <common.h>
-#include <mmc.h>
 #include <asm/io.h>
 #include <asm/arch/sama5d3_smc.h>
 #include <asm/arch/at91_common.h>
 #include <asm/arch/at91_rstc.h>
 #include <asm/arch/gpio.h>
 #include <asm/arch/clk.h>
-#include <atmel_mci.h>
-#include <net.h>
-#include <netdev.h>
 #include <spl.h>
 #include <asm/arch/atmel_mpddrc.h>
 #include <asm/arch/at91_wdt.h>
@@ -65,20 +61,12 @@ static void sama5d3_xplained_usb_hw_init(void)
 #ifdef CONFIG_GENERIC_ATMEL_MCI
 static void sama5d3_xplained_mci0_hw_init(void)
 {
-	at91_mci_hw_init();
-
 	at91_set_pio_output(AT91_PIO_PORTE, 2, 0);	/* MCI0 Power */
 }
 #endif
 
 int board_early_init_f(void)
 {
-	at91_periph_clk_enable(ATMEL_ID_PIOA);
-	at91_periph_clk_enable(ATMEL_ID_PIOB);
-	at91_periph_clk_enable(ATMEL_ID_PIOC);
-	at91_periph_clk_enable(ATMEL_ID_PIOD);
-	at91_periph_clk_enable(ATMEL_ID_PIOE);
-
 	at91_seriald_hw_init();
 
 	return 0;
@@ -97,10 +85,6 @@ int board_init(void)
 #endif
 #ifdef CONFIG_GENERIC_ATMEL_MCI
 	sama5d3_xplained_mci0_hw_init();
-#endif
-#ifdef CONFIG_MACB
-	at91_gmac_hw_init();
-	at91_macb_hw_init();
 #endif
 	return 0;
 }
@@ -113,24 +97,6 @@ int dram_init(void)
 	return 0;
 }
 
-int board_eth_init(bd_t *bis)
-{
-#ifdef CONFIG_MACB
-	macb_eth_initialize(0, (void *)ATMEL_BASE_GMAC, 0x00);
-	macb_eth_initialize(0, (void *)ATMEL_BASE_EMAC, 0x00);
-#endif
-	return 0;
-}
-
-#ifdef CONFIG_GENERIC_ATMEL_MCI
-int board_mmc_init(bd_t *bis)
-{
-	atmel_mci_init((void *)ATMEL_BASE_MCI0);
-
-	return 0;
-}
-#endif
-
 /* SPL */
 #ifdef CONFIG_SPL_BUILD
 void spl_board_init(void)