Add Pca9554 component (#4192)

tests/test1.yaml

@@ -1341,6 +1341,13 @@ binary_sensor:
       number: 1
       mode: INPUT
       inverted: true
+  - platform: gpio
+    name: PCA9554 binary sensor
+    pin:
+      pca9554: pca9554_hub
+      number: 1
+      mode: INPUT
+      inverted: true
   - platform: gpio
     name: MCP21 binary sensor
     pin:
@@ -1537,6 +1544,13 @@ output:
       number: 0
       mode: OUTPUT
       inverted: false
+  - platform: gpio
+    id: id26
+    pin:
+      pca9554: pca9554_hub
+      number: 0
+      mode: OUTPUT
+      inverted: false
   - platform: gpio
     id: id22
     pin:
@@ -2716,6 +2730,11 @@ pcf8574:
     pcf8575: false
     i2c_id: i2c_bus
 
+pca9554:
+  - id: pca9554_hub
+    address: 0x3F
+    i2c_id: i2c_bus
+
 mcp23017:
   - id: mcp23017_hub
     open_drain_interrupt: true