default or selected kernelversion does not have config value CONFIG_MACH_OMAP3_WESTBRIDGE_AST_PNAND_HAL.
Result is shown for kernelversion 5.6.18
WESTBRIDGE OMAP3430 Astoria PNAND HAL
configname: CONFIG_MACH_OMAP3_WESTBRIDGE_AST_PNAND_HAL
West Bridge HAL
└─>WESTBRIDGE OMAP3430 Astoria PNAND HAL
In linux kernel since version 2.6.37 (release Date: 2011-01-04)
Include the OMAP3430 HAL for PNAND interface