[Lcdproc] support for the ft245B in hd44780-ftdi

[Ismail Ibrahim]

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Hi all

I've cleanup the code.. please have a look on the attachment
to use the 4 bit wiring just add ftdi_mode=4 in the LCd.conf

wiring example:
FTDI chip : D0 D1 D2 D3 D4  D5  D6  D7
 HD44780 : D4 D5 D6 D7 EN RS RW NC

and of course we need to define
ftdi_line_RS=0x40
ftdi_line_RW=0x20
ftdi_line_EN=0x10

too

I don't write the backlight driver for the 4 bit mode because I'm not
able to test it.

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