NR RRC: use serving cell band for UE capability enquiry

[cl0713]

Pass the configured primary cell band into do_NR_SA_UECapabilityEnquiry() instead of hardcoding band 78. Derive the band for both TDD and FDD cells, log it, and update the ASN.1 test call.

[linux-foundation-easycla]

• ❌ - login: @cl0713 / name: Liu, Chang. The commit (347ff8a) is not authorized under a signed CLA. Please click here to be authorized. For further assistance with EasyCLA, please visit our EasyCLA portal and chat with our support bot.

[durantabot]

CI Build: #556 | Not performing CI due to the absence of one of the following mandatory labels:

• documentation Documentation-related changes or updates. (don't perform any stages)
• BUILD-ONLY Execute build stages only for code improvements with no impact on 4G/5G functionality. (execute only build stages)
• 4G-LTE Perform 4G Tests (perform 4G tests)
• 5G-NR Perform 5G Tests (perform 5G tests)
• nrUE Run only 5G UE tests (physims included, LDPC tests excluded). (perform only 5G-UE related tests including physims excluding LDPC tests)
• CI Perform both 4G and 5G tests (perform both 4G and 5G tests)

[rorsc]

/easycla

[rorsc]

the changes are ok to me. Before merging, you have to sign the CLA.

[cl0713]

We are looking for the CLA manager of our university, so I cannot sign it for now...