The headers rte_power_intrinsics.h and rte_power_pmd_mgmt.h
were missing from the doxygen API index.
Fixes: cda57d9388c0 ("eal: add power management intrinsics")
Fixes: 682a645438c5 ("power: add ethdev power management")
Cc: stable@dpdk.org
Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>