mmc: add missing MODULE_DESCRIPTION() macros

make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/mmc/host/of_mmc_spi.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/mmc/host/tmio_mmc_core.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/mmc/host/renesas_sdhi_core.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/mmc/core/mmc_core.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/mmc/core/pwrseq_simple.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/mmc/core/pwrseq_sd8787.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/mmc/core/pwrseq_emmc.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/mmc/core/sdio_uart.o

Add the missing invocations of the MODULE_DESCRIPTION() macro.

Reviewed-by: Wolfram Sang <[e-mail]> # for TMIO and SDHI
Signed-off-by: Jeff Johnson <[e-mail]>
Reviewed-by: Dragan Simic <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Ulf Hansson <[e-mail]>

drivers/mmc/core/core.c

···
 subsys_initcall(mmc_init);
 module_exit(mmc_exit);
 
+MODULE_DESCRIPTION("MMC core driver");
 MODULE_LICENSE("GPL");

drivers/mmc/core/pwrseq_emmc.c

···
 };
 
 module_platform_driver(mmc_pwrseq_emmc_driver);
+MODULE_DESCRIPTION("Hardware reset support for eMMC");
 MODULE_LICENSE("GPL v2");

drivers/mmc/core/pwrseq_sd8787.c

···
 };
 
 module_platform_driver(mmc_pwrseq_sd8787_driver);
+MODULE_DESCRIPTION("Power sequence support for Marvell SD8787 BT + Wifi chip");
 MODULE_LICENSE("GPL v2");

drivers/mmc/core/pwrseq_simple.c

···
 };
 
 module_platform_driver(mmc_pwrseq_simple_driver);
+MODULE_DESCRIPTION("Simple power sequence management for MMC");
 MODULE_LICENSE("GPL v2");

drivers/mmc/core/sdio_uart.c

···
 module_exit(sdio_uart_exit);
 
 MODULE_AUTHOR("Nicolas Pitre");
+MODULE_DESCRIPTION("SDIO UART/GPS driver");
 MODULE_LICENSE("GPL");

drivers/mmc/host/of_mmc_spi.c

···
 #include <linux/mmc/core.h>
 #include <linux/mmc/host.h>
 
+MODULE_DESCRIPTION("OpenFirmware bindings for the MMC-over-SPI driver");
 MODULE_LICENSE("GPL");
 
 struct of_mmc_spi {

drivers/mmc/host/renesas_sdhi_core.c

···
 }
 EXPORT_SYMBOL_GPL(renesas_sdhi_remove);
 
+MODULE_DESCRIPTION("Renesas SDHI core driver");
 MODULE_LICENSE("GPL v2");

drivers/mmc/host/tmio_mmc_core.c

···
 EXPORT_SYMBOL_GPL(tmio_mmc_host_runtime_resume);
 #endif
 
+MODULE_DESCRIPTION("TMIO MMC core driver");
 MODULE_LICENSE("GPL v2");