Howdy
A friend of mine owns a “Samsung Galaxy S2”
CPU-info tells us there is a SMDKV310 SoC in it:

# cat /proc/cpuinfo
Processor       : ARMv7 Processor rev 1 (v7l)
processor       : 0
BogoMIPS: 1592.52

Features: swp half thumb fastmult vfp edsp neon vfpv3
CPU implementer : 0x41
CPU architecture: 7
CPU variant     : 0x2
CPU part: 0xc09
CPU revision    : 1

Hardware: SMDKV310
 Revision: 000e
 Serial  : 304d19f743777c9e

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=blob;f=arch/arm/mach-exynos/mach-smdkv310.c;h=83b91fa777c1aeb4ca5ee95ff81f244a1641e904;hb=HEAD

Looks as there would be support for it in upstream.
Let’s see if it boots as well. ( e.g. upstream support for tegra2 is just formalism, the code in master doesn’t do anything useful)