My compilation has just failed with these errors
ERROR: modpost: "nss_crypto_pm_notify_register" [/home/R7800-qosmio-5.15-qsdk11-new-krait-cc/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/linux-ipq806x_generic/qca-nss-crypto-2021-03-20-2271a3a/v1.0/src/qca-nss-crypto.ko] undefined!
ERROR: modpost: "nss_crypto_notify_register" [/home/R7800-qosmio-5.15-qsdk11-new-krait-cc/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/linux-ipq806x_generic/qca-nss-crypto-2021-03-20-2271a3a/v1.0/src/qca-nss-crypto.ko] undefined!
ERROR: modpost: "nss_crypto_pm_notify_unregister" [/home/R7800-qosmio-5.15-qsdk11-new-krait-cc/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/linux-ipq806x_generic/qca-nss-crypto-2021-03-20-2271a3a/v1.0/src/qca-nss-crypto.ko] undefined!
ERROR: modpost: "nss_crypto_tx_msg" [/home/R7800-qosmio-5.15-qsdk11-new-krait-cc/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/linux-ipq806x_generic/qca-nss-crypto-2021-03-20-2271a3a/v1.0/src/qca-nss-crypto.ko] undefined!
ERROR: modpost: "nss_crypto_data_register" [/home/R7800-qosmio-5.15-qsdk11-new-krait-cc/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/linux-ipq806x_generic/qca-nss-crypto-2021-03-20-2271a3a/v1.0/src/qca-nss-crypto.ko] undefined!
ERROR: modpost: "nss_crypto_tx_buf" [/home/R7800-qosmio-5.15-qsdk11-new-krait-cc/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/linux-ipq806x_generic/qca-nss-crypto-2021-03-20-2271a3a/v1.0/src/qca-nss-crypto.ko] undefined!
make[5]: *** [scripts/Makefile.modpost:133: /home/R7800-qosmio-5.15-qsdk11-new-krait-cc/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/linux-ipq806x_generic/qca-nss-crypto-2021-03-20-2271a3a/Module.symvers] Error 1
make[5]: *** Deleting file '/home/R7800-qosmio-5.15-qsdk11-new-krait-cc/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/linux-ipq806x_generic/qca-nss-crypto-2021-03-20-2271a3a/Module.symvers'
make[4]: *** [Makefile:1813: modules] Error 2
make[4]: Leaving directory '/home/R7800-qosmio-5.15-qsdk11-new-krait-cc/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/linux-ipq806x_generic/linux-5.15.68'
make[3]: *** [Makefile:79: /home/R7800-qosmio-5.15-qsdk11-new-krait-cc/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/linux-ipq806x_generic/qca-nss-crypto-2021-03-20-2271a3a/.built] Error 2
make[3]: Leaving directory '/home/R7800-qosmio-5.15-qsdk11-new-krait-cc/feeds/nss/qca-nss-crypto'
time: package/feeds/nss/qca-nss-crypto/compile#5.40#1.19#10.66
ERROR: package/feeds/nss/qca-nss-crypto failed to build.
make[2]: *** [package/Makefile:116: package/feeds/nss/qca-nss-crypto/compile] Error 1
make[2]: Leaving directory '/home/R7800-qosmio-5.15-qsdk11-new-krait-cc'
make[1]: *** [package/Makefile:110: /home/R7800-qosmio-5.15-qsdk11-new-krait-cc/staging_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/stamp/.package_compile] Error 2
make[1]: Leaving directory '/home/R7800-qosmio-5.15-qsdk11-new-krait-cc'
make: *** [/home/R7800-qosmio-5.15-qsdk11-new-krait-cc/include/toplevel.mk:231: world] Error 2