Ender 3 V2 BL24C16 EEPROM support (#18758)

Marlin/src/inc/Conditionals_post.h

@@ -50,6 +50,8 @@
     #define USE_EMULATED_EEPROM 1
   #elif ANY(I2C_EEPROM, SPI_EEPROM)
     #define USE_WIRED_EEPROM    1
+  #elif ENABLED(IIC_BL24CXX_EEPROM)
+    // nothing
   #else
     #define USE_FALLBACK_EEPROM 1
   #endif
@@ -60,6 +62,7 @@
   #undef SDCARD_EEPROM_EMULATION
   #undef SRAM_EEPROM_EMULATION
   #undef FLASH_EEPROM_EMULATION
+  #undef IIC_BL24CXX_EEPROM
 #endif
 
 #ifdef TEENSYDUINO

Marlin/src/inc/SanityCheck.h

@@ -2131,8 +2131,13 @@ static_assert(hbm[Z_AXIS] >= 0, "HOMING_BUMP_MM.Z must be greater than or equal
  */
 #if ENABLED(EEPROM_SETTINGS)
   #if 1 < 0 \
-    + ENABLED(I2C_EEPROM) + ENABLED(SPI_EEPROM) + ENABLED(QSPI_EEPROM) \
-    + ENABLED(SDCARD_EEPROM_EMULATION) + ENABLED(FLASH_EEPROM_EMULATION) + ENABLED(SRAM_EEPROM_EMULATION)
+    + ENABLED(I2C_EEPROM) \
+    + ENABLED(SPI_EEPROM) \
+    + ENABLED(QSPI_EEPROM) \
+    + ENABLED(SDCARD_EEPROM_EMULATION) \
+    + ENABLED(FLASH_EEPROM_EMULATION) \
+    + ENABLED(SRAM_EEPROM_EMULATION) \
+    + ENABLED(IIC_BL24CXX_EEPROM)
     #error "Please select only one method of EEPROM Persistent Storage."
   #endif
 #endif