RDKB-65720: CCI crash during beacon data parsing

[rranga540]

Impacted Platforms: TXB7, TXB8, VXB10, SXB10
Reason for change: Failed to parse the start_ap_data
Test Procedure: Trigger any vapconfiguratio test case from cci.
Risks: Low
Priority: P2
Signed-off-by:RaviShankar.R_Rangaraj@comcast.com

[rdkcmf-jenkins]

b'## Blackduck scan failure details

Summary: 0 violations, 1 file pending approval, 0 files pending identification.

• Protex Server Path: /home/blackduck/github/OneWifiTestSuite-rdkfmac/9/rdkcentral/OneWifiTestSuite-rdkfmac

• Commit: 73bad99

Report detail: gist'

[Copilot]

Pull request overview

This PR addresses a CCI crash when parsing start_ap_data by removing SSID handling from the START_AP message path, so beacon head/tail data parsing no longer depends on SSID fields/offsets.

Changes:

• Removed ssid/ssid_len from the wlan_emu_cfg80211_start_ap_t message struct (non-5.15 mod_src).
• Stopped extracting/copying NL80211_ATTR_SSID into the START_AP message in mod_src/rdkfmac_netdev.c.
• Stopped serializing SSID length/data in the START_AP char-device payload in linux_5.15/mod_src/rdkfmac_cdev.c.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
mod_src/wlan_emu_msg_data.h	Removes SSID fields from the START_AP message struct to align message layout with beacon parsing expectations.
mod_src/rdkfmac_netdev.c	Drops SSID attribute extraction when building START_AP message data.
linux_5.15/mod_src/rdkfmac_cdev.c	Updates START_AP message serialization to omit SSID fields, preventing downstream parsing offset issues.

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