Support 128bit write granularity for kvdb

[tinic]

The new stm32h5xx MCUs only support quad word (128bit) writes to flash. Tested with this driver:

https://github.com/tinic/lightkraken2/blob/main/support/fal_stm32h5xx.c

[armink]

Thx @tinic . Can you update the fdb_tsdb.c and fdb_cfg.h code.

FlashDB/src/fdb_tsdb.c

Lines 28 to 30 in b309810

	#if (FDB_WRITE_GRAN == 64)
	#error "Flash 64 bits write granularity is not supported in TSDB yet!"
	#endif

FlashDB/inc/fdb_cfg.h

Lines 29 to 32 in b309810

	#ifdef FDB_USING_FAL_MODE
	/* the flash write granularity, unit: bit
	* only support 1(nor flash)/ 8(stm32f2/f4)/ 32(stm32f1) */
	#define FDB_WRITE_GRAN /* @note you must define it for a value */

[armink]

👍