Add bypass and RFI cap to SD. Move SD E.

Add some caps to the SD card power and SPI clock lines to try and make
it work while the radio is transmitting. With this hacked onto a v0.1
board, the radio still caused the SD card to fail, so it's unlikely
these will help much.

Move the SD card E right next to the GPS chip, swapping in the reset
controller, power switch, LDO and battery connector. This moves the SD
card further from the RF section and moves the battery closer to the
RF PA, both of which seem like a good plan.

Signed-off-by: Keith Packard <keithp@keithp.com>