esp32/machine_pin: Rename legacy CONFIG_ESP32_SPIRAM_SUPPORT option.

Signed-off-by: Damien George <damien@micropython.org>

Author: dpgeorge

ports/esp32/machine_pin.h

@@ -49,7 +49,7 @@
 #define MICROPY_HW_ENABLE_GPIO13 (1)
 #define MICROPY_HW_ENABLE_GPIO14 (1)
 #define MICROPY_HW_ENABLE_GPIO15 (1)
-#if !CONFIG_ESP32_SPIRAM_SUPPORT
+#if !CONFIG_SPIRAM
 #define MICROPY_HW_ENABLE_GPIO16 (1)
 #define MICROPY_HW_ENABLE_GPIO17 (1)
 #endif