MFC r272103: Move s3c2xx0 into the samsung directory.

Move the ARM Samsung s3c2xx0 support files into the samsung directory, to
match other platforms.

Discussed with: andrew

Set machine correctly on ARM. This allows universe to use the correct world
when building each kernel.

Reviewed by: imp

Merging projects/armv6, part 1

Cummulative patch of changes that are not vendor-specific:
- ARMv6 and ARMv7 architecture support
- ARM SMP support
- VFP/Neon support
- ARM Generic Interrupt Controller driver
- Simplification of startup code for all platforms

Add support for the Samsung S3C2xx0 family of ARM SoCs written by
Andrew Turner. The kernel supports the LN2410SBC evaluation board,
and likely others. These parts (or similar ones) are in some open
hardware designs for phones.

Submitted by: Andrew Turner