default or selected kernelversion does not have config value CONFIG_MTD_OMAP_NOR.
Result is shown for kernelversion 5.4.194

TI OMAP board mappings

modulename: omap_nor.ko

configname: CONFIG_MTD_OMAP_NOR

Linux Kernel Configuration
└─>Device Drivers
└─>Memory Technology Device (MTD) support
└─>Mapping drivers for chip access
└─>TI OMAP board mappings
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
This enables access to the NOR flash chips on TI OMAP-based
boards defining flash platform devices and flash platform data.
These boards include the Innovator, H2, H3, OSK, Perseus2, and
more. If you have such a board, say 'Y'.

source code: