configurations: sbp1: Add PCH and AUX VRs to PID loop

Add the following missing regulators to PID loop:
- P5V_AUX
- P3V3_AUX
- P1V05_PCH_AUX
- P1V8_PCH_AUX

While adding the regulators also fix the I2C bus of P3V3_AUX, which is
on bus 34.

Tested: All regulators are used within swampd.

Change-Id: I93a96e7977d586e0d553cf0d1df8b0e09c8ca490
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
diff --git a/configurations/sbp1_baseboard.json b/configurations/sbp1_baseboard.json
index a3b8fa6..1750522 100644
--- a/configurations/sbp1_baseboard.json
+++ b/configurations/sbp1_baseboard.json
@@ -450,7 +450,7 @@
         },
         {
             "Address": "0x40",
-            "Bus": "24",
+            "Bus": "34",
             "Labels": [
                 "iout1",
                 "vin",