ARM: at91: convert old leds drivers to gpio_led and led_trigger drivers

Build with at91 defconfigs successfully

Signed-off-by: Bryan Wu <bryan.wu@canonical.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>

diff --cc arch/arm/mach-at91/board-csb337.c
Simple merge

diff --cc arch/arm/mach-at91/board-ecbat91.c
Simple merge

diff --cc arch/arm/mach-at91/board-eco920.c
Simple merge

diff --cc arch/arm/mach-at91/board-kafa.c
Simple merge

diff --cc arch/arm/mach-at91/board-kb9202.c
Simple merge

diff --cc arch/arm/mach-at91/board-rm9200dk.c
Simple merge

diff --cc arch/arm/mach-at91/board-rm9200ek.c
Simple merge

diff --cc arch/arm/mach-at91/board-rsi-ews.c
Simple merge

diff --cc arch/arm/mach-at91/board-sam9-l9260.c
Simple merge

diff --cc arch/arm/mach-at91/board-sam9261ek.c
Simple merge

diff --cc arch/arm/mach-at91/board-yl-9200.c
Simple merge

diff --cc arch/arm/mach-at91/include/mach/board.h
Simple merge

diff --cc arch/arm/mach-at91/leds.c
Simple merge