openpower-pels: Component IDs for power/fan errors

Add table entries to ComponentIDs.md for the following repositories:
* phosphor-power
* phosphor-fan-presence

Signed-off-by: Shawn McCarney <shawnmm@us.ibm.com>
Change-Id: I226194a3925532e7dc944cf79e5cf89012336fa3

Author: smccarney

extensions/openpower-pels/registry/ComponentIDs.md

@@ -7,6 +7,8 @@ used.
 |--------------|------------|
 | 0x1000       | Common Errors that span repositories |
 | 0x2000       | phosphor-logging |
+| 0x2700       | phosphor-power |
+| 0x2800       | phosphor-fan-presence |
 | 0x3000       | openpower-proc-control |
 | 0xD100       | openpower-hardware-diags (attn-handler) |
 | 0xE500       | openpower-hardware-diags |