default or selected kernelversion does not have config value CONFIG_QCOM_Q6V5_IPA_NOTIFY.
Result is shown for kernelversion 5.9.15

CONFIG_QCOM_Q6V5_IPA_NOTIFY (not configurable)

modulename: qcom_q6v5_ipa_notify.ko

configname: CONFIG_QCOM_Q6V5_IPA_NOTIFY

Linux Kernel Configuration
└─>Device Drivers
└─>Remoteproc drivers
└─>QCOM_Q6V5_IPA_NOTIFY
In linux kernel since version 5.7 (release Date: 2020-05-31)  
source code:
drivers/remoteproc/qcom_q6v5_ipa_notify.c

is depended by
CONFIG_QCOM_Q6V5_MSS