pysystemmgr: Fix pci_reset_outs

The pcie_reset_outs is incorrect and cause the PCIE reset functionality
broken.
Fix this by correctly parsing the GPIO config table.

Change-Id: I14bef6eba32c43fcc8e13ec956ad2e171d3e90b8
Signed-off-by: Lei YU <mine260309@gmail.com>
diff --git a/pysystemmgr/system_manager.py b/pysystemmgr/system_manager.py
index d145e74..ff7fd69 100644
--- a/pysystemmgr/system_manager.py
+++ b/pysystemmgr/system_manager.py
@@ -191,7 +191,7 @@
         latch_out = power_config.get('latch_out', '')
         power_up_outs = power_config.get('power_up_outs', [])
         reset_outs = power_config.get('reset_outs', [])
-        pci_reset_outs = System.GPIO_CONFIGS.get('pci_reset_outs', [])
+        pci_reset_outs = power_config.get('pci_reset_outs', [])
         hostctl_config = System.GPIO_CONFIGS.get('hostctl_config', {})
         fsi_data = hostctl_config.get('fsi_data', '')
         fsi_clk = hostctl_config.get('fsi_clk', '')