Update flashrom requirements in the README

Corresponding to flashrom svn r83 and coreboot v2 svn r2530.

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
diff --git a/README b/README
index 1a6bd3b..18e595b 100644
--- a/README
+++ b/README
@@ -11,7 +11,8 @@
 installed on your Linux system:
 
 * pciutils
-* pciutils-devel
+* pciutils-devel / pciutils-dev
+* zlib-devel / zlib1g-dev
 
 
 Usage