stm32h743xx: Add AXI SRAM memory map

Reference: RM0433, Table 7 (Memory map)
https://www.st.com/resource/en/reference_manual/rm0433-stm32h742-stm32h743753-and-stm32h750-value-line-advanced-armbased-32bit-mcus-stmicroelectronics.pdf

pyocd/target/builtin/target_STM32H743xx.py

@@ -168,6 +168,10 @@ class STM32H743xx(CoreSightTarget):
         RamRegion(   start=0x20000000, length=0x20000,
                   is_cachable=False,
                   access="rw"),
+
+        # AXI SRAM
+        RamRegion(   start=0x24000000, length=0x80000),
+
         #sram1
         RamRegion(   start=0x30000000, length=0x20000,
                   is_powered_on_boot=False),
@@ -321,6 +325,3 @@ def mass_erase(self, flash_banks=[0,1]):
             while self.read32(bank.flash_sr) & 1:
                 time.sleep(0.1)
             LOG.info("mass_erase bank %i done", bank.bank)
-
-
-