ar71xx: wndr4300: change 'orange' to 'amber' in LED color names

The hardware manual says amber so change the color part of
the LED names to reflect that. Also update the constant names.

Based on the the WNDR3700v4 support patch from Ralph Perlich:
  http://patchwork.openwrt.org/patch/4763/

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@40473 3c298f89-4303-0410-b956-a3cf2f4a3e73
ar71xx: wndr4300: select GPIO_OUT functionality for LED GPIOs

The bootloader does not initializes the output function
correctly for all LEDs. DO that from the board setup code.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@40474 3c298f89-4303-0410-b956-a3cf2f4a3e73
ar71xx: wndr4300: add LED for 2.4Ghz wifi interface

Based on the the WNDR3700v4 support patch from Ralph Perlich:
  http://patchwork.openwrt.org/patch/4763/

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@40475 3c298f89-4303-0410-b956-a3cf2f4a3e73
ar71xx: add default LED config for WiFi LEDs on the WNDR4300

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@40476 3c298f89-4303-0410-b956-a3cf2f4a3e73
ar71xx: wndr4300: use KEY_RFKILL code for the Wireless button

Based on the the WNDR3700v4 support patch from Ralph Perlich:
  http://patchwork.openwrt.org/patch/4763/

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@40477 3c298f89-4303-0410-b956-a3cf2f4a3e73