esp32c6: update esp32c6 magic value and spi reg offset

Author: esp-wzh

esptool/targets/esp32c6.py

@@ -23,7 +23,15 @@ class ESP32C6ROM(ESP32ROM):
     BOOTLOADER_FLASH_OFFSET = 0x0
 
     # Magic value for ESP32C6
-    CHIP_DETECT_MAGIC_VALUE = [0x1EA0206F]
+    CHIP_DETECT_MAGIC_VALUE = [0x2CE0806F]
+
+    SPI_REG_BASE = 0x60003000
+    SPI_USR_OFFS = 0x18
+    SPI_USR1_OFFS = 0x1C
+    SPI_USR2_OFFS = 0x20
+    SPI_MOSI_DLEN_OFFS = 0x24
+    SPI_MISO_DLEN_OFFS = 0x28
+    SPI_W0_OFFS = 0x58
 
     UART_DATE_REG_ADDR = 0x60000000 + 0x7C