h2200: Add support for iPAQ h2200 palmtop

Add basic support for HP iPAQ h2200 palmtop. h2200 palmtop was targeted
to general consumers. It has 64 MB of RAM, 32 MB flash. No intergrated
Wi-Fi nor Ethernet. Based on Intel PXA255 processor. It was shipped with
Windows CE 4.2 operating system.

Signed-off-by: Lukasz Dalek <luk0104@gmail.com>