default or selected kernelversion does not have config value CONFIG_MMC_MSM7X00A.
Result is shown for kernelversion 5.4.229

Qualcomm MSM 7X00A SDCC Controller Support

modulename: msm_sdcc.ko

configname: CONFIG_MMC_MSM7X00A

Linux Kernel Configuration
└─>Device Drivers
└─>MMC/SD/SDIO card support
└─>Qualcomm MSM 7X00A SDCC Controller Support
In linux kernel since version 2.6.32 (release Date: 2009-12-02)  
This provides support for the SD/MMC cell found in the
MSM 7X00A controllers from Qualcomm.

source code: