OMAP3: clean-up mach specific cpuidle data structures

- sleep_latency and wake_latency are not used, replace them by
  exit_latency which is used by cpuidle. exit_latency simply is
  the sum of sleep_latency and wake_latency,
- replace threshold by target_residency,
- changed the OMAP3 specific cpuidle code accordingly,
- changed the OMAP3 board code accordingly.

Signed-off-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
diff --git a/arch/arm/mach-omap2/board-rx51.c b/arch/arm/mach-omap2/board-rx51.c
index f8ba20a..fec4cac 100644
--- a/arch/arm/mach-omap2/board-rx51.c
+++ b/arch/arm/mach-omap2/board-rx51.c
@@ -58,21 +58,25 @@
 	},
 };
 
+/*
+ * cpuidle C-states definition override from the default values.
+ * The 'exit_latency' field is the sum of sleep and wake-up latencies.
+ */
 static struct cpuidle_params rx51_cpuidle_params[] = {
 	/* C1 */
-	{1, 110, 162, 5},
+	{110 + 162, 5 , 1},
 	/* C2 */
-	{1, 106, 180, 309},
+	{106 + 180, 309, 1},
 	/* C3 */
-	{0, 107, 410, 46057},
+	{107 + 410, 46057, 0},
 	/* C4 */
-	{0, 121, 3374, 46057},
+	{121 + 3374, 46057, 0},
 	/* C5 */
-	{1, 855, 1146, 46057},
+	{855 + 1146, 46057, 1},
 	/* C6 */
-	{0, 7580, 4134, 484329},
+	{7580 + 4134, 484329, 0},
 	/* C7 */
-	{1, 7505, 15274, 484329},
+	{7505 + 15274, 484329, 1},
 };
 
 static struct omap_lcd_config rx51_lcd_config = {