soc: Fix SOC_IROM_MASK_HIGH address
The high address limit IROM on the esp32s2 is incorrect, thus
causing backtrace printing to think valid function PCs are invalid.
#define SOC_IROM_LOW 0x40080000
#define SOC_IROM_HIGH 0x40800000
#define SOC_IROM_MASK_LOW 0x40000000
-#define SOC_IROM_MASK_HIGH 0x4001A100
+#define SOC_IROM_MASK_HIGH 0x40020000
#define SOC_IRAM_LOW 0x40020000
#define SOC_IRAM_HIGH 0x40070000
#define SOC_DRAM_LOW 0x3FFB0000
