[gta02-core] BT & WLAN schematics

[Dave Ball]

I've just committed a first go at schematics for bluetooth and WLAN
(using SPI)  Neither were particularly big, so I've put them both on the
same sheet.

I've used new names for some of the nets (WLAN_MOSI etc.) but some of
the others aren't particularly helpful in understanding their purpose,
should we look at renaming these too?

i.e.
WLAN_GPIO0 & WLAN_GPIO1
PIO9 & PIO10 (used for BT/WLAN co-existence)
PIO_2 & PIO_5 (used for BT interrupts)


Let me know of any problems!

Dave