ACPI: ec: Increase timeout from 50 to 500 ms to handle old slow machines.

http://bugzilla.kernel.org/show_bug.cgi?id=7466

Signed-off-by: Len Brown <len.brown@intel.com>

drivers/acpi/ec.c

@@ -65,10 +65,10 @@ enum {
 	ACPI_EC_EVENT_IBF_0,		/* Input buffer empty */
 };
 
-#define ACPI_EC_DELAY		50	/* Wait 50ms max. during EC ops */
+#define ACPI_EC_DELAY		500	/* Wait 500ms max. during EC ops */
 #define ACPI_EC_UDELAY_GLK	1000	/* Wait 1ms max. to get global lock */
 #define ACPI_EC_UDELAY         100	/* Poll @ 100us increments */
-#define ACPI_EC_UDELAY_COUNT   1000	/* Wait 10ms max. during EC ops */
+#define ACPI_EC_UDELAY_COUNT   1000	/* Wait 100ms max. during EC ops */
 
 enum {
 	EC_INTR = 1,	/* Output buffer full */