systemagent-r6: improve boot time on sandy bridge

The code tests a register 5000 times that I doubt exists
on sandy bridge. reduce to 50.

Change-Id: I86d0e35e3a8cd61b3f7c531cd4e3dd8cc5b28f57
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
diff --git a/northbridge/intel/sandybridge/systemagent-r6.bin b/northbridge/intel/sandybridge/systemagent-r6.bin
index 58c70ea..9561ec2 100644
--- a/northbridge/intel/sandybridge/systemagent-r6.bin
+++ b/northbridge/intel/sandybridge/systemagent-r6.bin
Binary files differ