Convert CONFIG_88F5182 et al to Kconfig

This converts the following to Kconfig:
   CONFIG_88F5182
   CONFIG_BOARD_IS_OPENRD_BASE
   CONFIG_BOARD_IS_OPENRD_CLIENT
   CONFIG_BOARD_IS_OPENRD_ULTIMATE
   CONFIG_D2NET_V2
   CONFIG_FEROCEON
   CONFIG_FEROCEON_88FR131
   CONFIG_INETSPACE_V2
   CONFIG_KW88F6192
   CONFIG_KW88F6281
   CONFIG_KW88F6702
   CONFIG_NET2BIG_V2
   CONFIG_NETSPACE_LITE_V2
   CONFIG_NETSPACE_MAX_V2
   CONFIG_NETSPACE_MINI_V2
   CONFIG_NETSPACE_V2
   CONFIG_SHEEVA_88SV131

At this point mv-plug-common.h is now only an include of mv-common.h so
remove that indirection.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/openrd_ultimate_defconfig b/configs/openrd_ultimate_defconfig
index b587963..7c2e41e 100644
--- a/configs/openrd_ultimate_defconfig
+++ b/configs/openrd_ultimate_defconfig
@@ -7,13 +7,13 @@
 CONFIG_SYS_TEXT_BASE=0x600000
 CONFIG_NR_DRAM_BANKS=2
 CONFIG_TARGET_OPENRD=y
+CONFIG_BOARD_IS_OPENRD_ULTIMATE=y
 CONFIG_ENV_SIZE=0x20000
 CONFIG_ENV_OFFSET=0x80000
 CONFIG_DEFAULT_DEVICE_TREE="kirkwood-openrd-ultimate"
 CONFIG_IDENT_STRING="\nOpenRD-Ultimate"
 # CONFIG_SYS_MALLOC_F is not set
 CONFIG_SYS_LOAD_ADDR=0x800000
-CONFIG_SYS_EXTRA_OPTIONS="BOARD_IS_OPENRD_ULTIMATE"
 CONFIG_BOOTDELAY=3
 CONFIG_USE_BOOTCOMMAND=y
 CONFIG_BOOTCOMMAND="${x_bootcmd_kernel}; setenv bootargs ${x_bootargs} ${x_bootargs_root}; ${x_bootcmd_usb}; bootm 0x6400000;"