[ARM] Orion5x: add GPIO LED and buttons for wrt350n v2
[ARM] Orion5x: add GPIO LED and buttons for wrt350n v2

Signed-off-by: Dirk Teurlings <a00b27378a09822d5638cdfb8c2e7ccc36d74c56@upexia.nl>
Signed-off-by: Lennert Buytenhek <8858498612e3a522354216649776e3032dcb7e5b@marvell.com>
Signed-off-by: Nicolas Pitre <d659c10e27d52b00987b65e85d99bce5480adcae@marvell.com>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs