psci: fix values of incorrectly defined constants

This patch fixes the following constant values in the psci.h:

1. The affinity level shift value in the power_state parameter of the
   cpu_suspend psci call. The previous value was preventing shutdown
   of the affinity level 1.

2. The values used for affinity state constants (ON, OFF,
   ON_PENDING). They did not match the values expected to be returned
   by the affinity_info psci api as mentioned in the spec.

3. The state id shift value in the power_state parameter of the
   cpu_suspend psci call.

Change-Id: I62ed5eb0e9640b4aa97b93923d6630e6b877a097

docs/change-log.md

@@ -49,6 +49,9 @@ Detailed changes since last release
     physically powered up to prevent a spurious wake up from a subsequent cpu
     off state.
 
+*   Definitions of some constants related to the PSCI api calls AFFINITY_INFO
+    and CPU_SUSPEND have been corrected.
+
 ARM Trusted Firmware - version 0.2
 ==================================
 

include/psci.h

@@ -60,9 +60,9 @@
 /*******************************************************************************
  * PSCI CPU_SUSPEND 'power_state' parameter specific defines
  ******************************************************************************/
-#define PSTATE_ID_SHIFT		15
+#define PSTATE_ID_SHIFT		0
 #define PSTATE_TYPE_SHIFT	16
-#define PSTATE_AFF_LVL_SHIFT	25
+#define PSTATE_AFF_LVL_SHIFT	24
 
 #define PSTATE_ID_MASK		0xffff
 #define PSTATE_TYPE_MASK	0x1
@@ -107,10 +107,10 @@
 
 #define PSCI_AFF_ABSENT		0x0
 #define PSCI_AFF_PRESENT	0x1
-#define PSCI_STATE_OFF		0x0
-#define PSCI_STATE_ON_PENDING	0x1
-#define PSCI_STATE_SUSPEND	0x2
-#define PSCI_STATE_ON		0x3
+#define PSCI_STATE_ON		0x0
+#define PSCI_STATE_OFF		0x1
+#define PSCI_STATE_ON_PENDING	0x2
+#define PSCI_STATE_SUSPEND	0x3
 
 /* Number of affinity instances whose state this psci imp. can track */
 #define PSCI_NUM_AFFS		32ull