UPSTREAM: wifi: nl80211: retrieve EHT related elements in AP mode

Add support to retrieve EHT capabilities and EHT operation elements
passed by the userspace in the beacon template and store the pointers
in struct cfg80211_ap_settings to be used by the drivers.

Co-developed-by: Vikram Kandukuri <quic_vikram@quicinc.com>
Signed-off-by: Vikram Kandukuri <quic_vikram@quicinc.com>
Co-developed-by: Veerendranath Jakkam <quic_vjakkam@quicinc.com>
Signed-off-by: Veerendranath Jakkam <quic_vjakkam@quicinc.com>
Signed-off-by: Aloka Dixit <quic_alokad@quicinc.com>
Link: https://lore.kernel.org/r/20220523064904.28523-1-quic_alokad@quicinc.com


Signed-off-by: Johannes Berg <johannes.berg@intel.com>

Bug: 238103864
Change-Id: If5998e279b39136a6f9b24a9ceedbc0248fe7810
(cherry picked from commit 8bc65d38)
Signed-off-by: Veerendranath Jakkam <quic_vjakkam@quicinc.com>