[flashrom] [PATCH]Enable flashrom on Wyse Winterm S50.

[Nils]

Hi,
First off all I want to thank all flashrom and coreboot members for their great 
work!
With the help of the little attached patch I was able to Probe, Read, Write 
and Verify a ST49LF020A flashchip on my Wyse Winterm S50 Thin Client with Geode 
GX500 (GX2) processor and CS5536 companion chip.

Signed-off-by: Nils Jacobs

I hope its the right patch.

Thanks,
Nils.