linux-handhelds-2.6: Add 2.6.21-hh12.

linux-handhelds-2.6: Add 2.6.21-hh12.
* Changes since -hh11 are:
1. *_static_defconfigs now consistently include support for MTD block/char devices.
2. asus716: PCMCIA cleanups.
3. aximx50: Move towards runtime VGA vs QVGA configuration.
4. acx: Fixed PCMCIA suspend/resume; fixed issue with WEP keys being lost after resume;
   fix buffer overflow while accessing diag files in /proc.
5. ts_adc_debounce: Fix regression, add rough but practical threshold for better pen up
   detection, implement module debug parameter.
6. h4000: pcmcia fixes, acx works pretty well now, ts_adc_debounce tweaking.
7. looxc550: Buttons, power, UDC support.
8. htcmagician: Better earphone support.
9. SoC base drivers: concistently support child devices pattern.
10. pxa27x_udc: Add support for platform_data::gpio_pullup.