cleanup/unify flash sector size define value (#5327)

* cleanup/unify sector size define value

* replicate spi_flash_sec_size.h file for host tests

* further flash geometry cleanup, remove host test duplicate file

tools/sdk/include/spi_flash.h

@@ -25,6 +25,8 @@
 #ifndef SPI_FLASH_H
 #define SPI_FLASH_H
 
+#include <spi_flash_geometry.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -44,8 +46,6 @@ typedef struct{
 	uint32  status_mask;
 } SpiFlashChip;
 
-#define SPI_FLASH_SEC_SIZE      4096
-
 extern SpiFlashChip * flashchip; // in ram ROM-BIOS
 
 uint32 spi_flash_get_id(void);

tools/sdk/include/spi_flash_geometry.h

@@ -0,0 +1,15 @@
+#ifndef SPI_FLASH_GEOMETRY_H
+#define SPI_FLASH_GEOMETRY_H
+
+/* The flash geometry is meant to be unified here. This header file should be included wherever needed.
+ * Beware: this file is needed by eboot as well as the Arduino core.
+ */
+
+#define FLASH_SECTOR_SIZE 0x1000
+#define FLASH_BLOCK_SIZE 0x10000
+#define APP_START_OFFSET 0x1000
+
+//pulled this define from spi_flash.h for reuse in the Arduino core without pulling in a bunch of other stuff
+#define SPI_FLASH_SEC_SIZE      FLASH_SECTOR_SIZE
+
+#endif

tools/sdk/include/upgrade.h

@@ -29,8 +29,8 @@
 extern "C" {
 #endif
 
+#include <spi_flash_geometry.h>
 
-#define SPI_FLASH_SEC_SIZE      4096
 #define LIMIT_ERASE_SIZE		0x10000
 
 #define USER_BIN1               0x00