LPC176x requires USE_SHARED_EEPROM (#17858)

Marlin/src/HAL/LPC1768/inc/Conditionals_post.h

 
 #if USE_FALLBACK_EEPROM
   #define FLASH_EEPROM_EMULATION
+#elif EITHER(I2C_EEPROM, SPI_EEPROM)
+  #define USE_SHARED_EEPROM 1
 #endif