ipmi:kcs: Reduce the number of retries

The retry count was initially set to 10, which with the 5 second
timeouts give 55 seconds to fail a message.

The IPMI spec specifies the 5 second timeout, and it specifies retries
for KCS but does not specify a number.  55 seconds is a long time, so
reduce retries to 2.  It matches the default in the BT state machine.
This is 15 seconds, then, which is still a long time, but more
reasonable.

Signed-off-by: Corey Minyard <[email protected]>

drivers/char/ipmi/ipmi_kcs_sm.c

@@ -102,7 +102,7 @@ enum kcs_states {
 /* Timeouts in microseconds. */
 #define IBF_RETRY_TIMEOUT (5*USEC_PER_SEC)
 #define OBF_RETRY_TIMEOUT (5*USEC_PER_SEC)
-#define MAX_ERROR_RETRIES 10
+#define MAX_ERROR_RETRIES 2
 #define ERROR0_OBF_WAIT_JIFFIES (2*HZ)
 
 struct si_sm_data {