ramips: rt288x: add support for the Belkin F5D8235-4 v1 board

target/linux/ramips/base-files/etc/diag.sh

...ramips/base-files/etc/hotplug.d/firmware/10-rt2x00-eeprom

target/linux/ramips/base-files/etc/uci-defaults/network

target/linux/ramips/base-files/lib/ramips.sh

.../ramips/files/arch/mips/include/asm/mach-ralink/machine.h

target/linux/ramips/files/arch/mips/ralink/rt288x/Kconfig

target/linux/ramips/files/arch/mips/ralink/rt288x/Makefile

...ux/ramips/files/arch/mips/ralink/rt288x/mach-f5d8235-v1.c

target/linux/ramips/image/Makefile

target/linux/ramips/rt288x/config-2.6.39

target/linux/ramips/rt288x/profiles/belkin.mk