Fix: SD_MMC deinit (#5732)

* SD.open() new feature for creating all folders in path

This PR adds to the SD.open() function option to create all folders to the file.

SD.open(const char* path, const char* mode, const bool create)

Default value of create is false.
When true folders are created.

From issue #5019

* Update vfs_api.cpp

memccpy -> memcpy

* SD_MMC deinit fix

Wrong deinit function was called.

libraries/SD_MMC/src/SD_MMC.cpp

@@ -54,7 +54,7 @@ bool SDMMCFS::begin(const char * mountpoint, bool mode1bit, bool format_if_mount
     host.set_bus_ddr_mode = &sdmmc_host_set_bus_ddr_mode;
     host.set_card_clk = &sdmmc_host_set_card_clk;
     host.do_transaction = &sdmmc_host_do_transaction;
-    host.deinit_p = &sdspi_host_remove_device;
+    host.deinit = &sdmmc_host_deinit;
     host.io_int_enable = &sdmmc_host_io_int_enable;
     host.io_int_wait = &sdmmc_host_io_int_wait;
     host.command_timeout_ms = 0;