arm: Remove edb9315a board

These boards have not been converted to CONFIG_DM_USB by the deadline
and is also missing conversion to CONFIG_DM.  Remove it.

This is also the last PL010_SERIAL using board, so remove those
references.

Cc: Sergey Kostanbaev <sergey.kostanbaev@fairwaves.ru>
Signed-off-by: Tom Rini <trini@konsulko.com>

configs/edb9315a_defconfig

@@ -1,54 +0,0 @@
-CONFIG_ARM=y
-CONFIG_TARGET_EDB93XX=y
-CONFIG_SYS_TEXT_BASE=0x60000000
-CONFIG_NR_DRAM_BANKS=8
-CONFIG_ENV_SIZE=0x20000
-CONFIG_ENV_SECT_SIZE=0x20000
-CONFIG_SYS_EXTRA_OPTIONS="MK_edb9315a"
-CONFIG_USE_BOOTARGS=y
-CONFIG_BOOTARGS="root=/dev/nfs console=ttyAM0,115200 ip=dhcp"
-# CONFIG_DISPLAY_CPUINFO is not set
-# CONFIG_DISPLAY_BOARDINFO is not set
-CONFIG_BOARD_EARLY_INIT_F=y
-CONFIG_HUSH_PARSER=y
-# CONFIG_CMDLINE_EDITING is not set
-# CONFIG_AUTO_COMPLETE is not set
-CONFIG_SYS_PROMPT="EDB9315A> "
-CONFIG_CMD_BOOTZ=y
-CONFIG_CMD_IMLS=y
-# CONFIG_CMD_XIMG is not set
-CONFIG_CMD_USB=y
-# CONFIG_CMD_SETEXPR is not set
-CONFIG_CMD_DHCP=y
-CONFIG_CMD_EXT2=y
-CONFIG_CMD_EXT4=y
-CONFIG_CMD_FAT=y
-CONFIG_CMD_JFFS2=y
-# CONFIG_DOS_PARTITION is not set
-CONFIG_ENV_OVERWRITE=y
-CONFIG_ENV_IS_IN_FLASH=y
-CONFIG_SYS_REDUNDAND_ENVIRONMENT=y
-CONFIG_ENV_ADDR=0x60040000
-CONFIG_ENV_ADDR_REDUND=0x60060000
-CONFIG_LED_STATUS=y
-CONFIG_LED_STATUS0=y
-CONFIG_LED_STATUS_BIT=0
-CONFIG_LED_STATUS_STATE=2
-CONFIG_LED_STATUS1=y
-CONFIG_LED_STATUS_BIT1=1
-CONFIG_LED_STATUS_BOOT_ENABLE=y
-CONFIG_LED_STATUS_BOOT=0
-CONFIG_LED_STATUS_RED_ENABLE=y
-CONFIG_LED_STATUS_RED=1
-CONFIG_LED_STATUS_GREEN_ENABLE=y
-CONFIG_LED_STATUS_GREEN=0
-# CONFIG_MMC is not set
-CONFIG_MTD_NOR_FLASH=y
-CONFIG_FLASH_CFI_DRIVER=y
-CONFIG_SYS_FLASH_USE_BUFFER_WRITE=y
-CONFIG_SYS_FLASH_PROTECTION=y
-CONFIG_SYS_FLASH_CFI=y
-CONFIG_MII=y
-CONFIG_CONS_INDEX=0
-CONFIG_USB=y
-CONFIG_USB_STORAGE=y