More GTA01 Patches

[tim.niemeyer at mastersword.de]

Hi

here are some more GTA01 patches.
They are on top of my other patches.

rtc works
gps works

I would greatly welcome some comments on 
0003-Clean-up-pcf50606_client_dev_register.patch .
Maybe it should be ported to GTA02?

next, i think, i will clean up the .config.