[Arm-netbook] Polishing keyboard support

[Albert ARIBAUD]

Hi Luke and all,

I am polishing a new push for keyboard, mainly adding support for
modifiers (ctrl, shift, alt, GUI) -- this makes the keyboard fully
useable under any reasonable OS.

While I was at it, I ran a full check on my AZERTY keyboard's layout,
and found two keys in its matrix which the EC SW maps to 0x00 ('no
key') in the current code. Namely:

	row 1, column 5: keypad "+"

	row f, column 4: keyboard "DEL"

Keypad "+" is present in the SW matrix, but at row 1, column 1 (which on
my keyboard maps to no key).

Keyboard "DEL" does not seem to be mapped in the SW matrix.

Luke, could you check the QWERTY keyboard matrix position for those two
keys? I'd like to make sure whether we can use the same SW matrix for
both keyboards or whether we need two.

Amicalement,
-- 
Albert.