stm32/boards/stm32f722.ld: Provide memory regions for internal FS.

ports/stm32/boards/stm32f722.ld

@@ -6,9 +6,11 @@
 MEMORY
 {
     FLASH (rx)      : ORIGIN = 0x08000000, LENGTH = 512K
-    FLASH_ISR (rx)  : ORIGIN = 0x08000000, LENGTH = 32K     /* sectors 0,1 */
-    FLASH_APP (rx)  : ORIGIN = 0x08008000, LENGTH = 480K    /* sectors 2-7 */
-    RAM (xrw)       : ORIGIN = 0x20000000, LENGTH = 256K    /* DTCM+SRAM1+SRAM2 */
+    FLASH_ISR (rx)  : ORIGIN = 0x08000000, LENGTH = 16K     /* sector 0, 16K */
+    FLASH_FS (r)    : ORIGIN = 0x08004000, LENGTH = 112K    /* sectors 1-4 3*16KiB 1*64KiB*/
+    FLASH_TEXT (rx) : ORIGIN = 0x08020000, LENGTH = 384K    /* sectors 5-7 3*128KiB = 384K */
+    DTCM (xrw)      : ORIGIN = 0x20000000, LENGTH = 64K     /* Used for storage cache */
+    RAM (xrw)       : ORIGIN = 0x20010000, LENGTH = 192K    /* SRAM1 = 176K, SRAM2 = 16K */
 }
 
 /* produce a link error if there is not this amount of RAM for these sections */