default or selected kernelversion does not have config value CONFIG_FB_INTSRAM.
Result is shown for kernelversion 6.5.1

Frame Buffer in internal SRAM


Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Frame Buffer in internal SRAM
In linux kernel since version 2.6.24 (release Date: 2008-01-24)  
Say Y if you want to map Frame Buffer in internal SRAM. Say N if you want
to let frame buffer in external SDRAM.