GPIO abstraction for power and host control

In libopenbmc_intf/power_gpio.c there are GPIO abstractions for power
related GPIOs.
Host control related GPIOs need to do the same abstraction.

The changes include:
1. Add host control related GPIOs in gpio_configs and update
system_manager.py
2. Update control_host_obj.c to use the abstracted GPIOs
3. Update GPIO_CONFIGS for all machines and add host control related
GPIOs

power_gpio will be renamed to gpio_configs in next commit;

Resolves openbmc/openbmc#814

Change-Id: I7832065d495d7d64c5df2f5b177005b97e68900a
Signed-off-by: Lei YU <mine260309@gmail.com>
diff --git a/configs/Romulus.py b/configs/Romulus.py
index c474647..178fb8e 100644
--- a/configs/Romulus.py
+++ b/configs/Romulus.py
@@ -321,16 +321,26 @@
     },
 }
 
-POWER_CONFIG = {
-    'power_good_in' : 'SYS_PWROK_BUFF',
-    'power_up_outs' : [
-        ('SOFTWARE_PGOOD', True),
-        ('BMC_POWER_UP', True),
-    ],
-    'reset_outs' : [
-        ('BMC_CP0_RESET_N', False),
-        ('BMC_CP0_PERST_ENABLE_R', False),
-    ],
+GPIO_CONFIGS = {
+    'power_config' : {
+        'power_good_in' : 'SYS_PWROK_BUFF',
+        'power_up_outs' : [
+            ('SOFTWARE_PGOOD', True),
+            ('BMC_POWER_UP', True),
+        ],
+        'reset_outs' : [
+            ('BMC_CP0_RESET_N', False),
+            ('BMC_CP0_PERST_ENABLE_R', False),
+        ],
+    },
+    'hostctl_config' : {
+        'fsi_data' : 'FSI_DATA',
+        'fsi_clk' : 'FSI_CLK',
+        'fsi_enable' : 'FSI_ENABLE',
+        'cronus_sel' : 'CRONUS_SEL',
+        'optionals' : [
+        ],
+    },
 }
 
 # Miscellaneous non-poll sensor with system specific properties.