Fix Critical Error #3 for LilyGo T-Echo (meshtastic#6791)

* Fix Critical Error #3

* clang format

Author: Logicbloke

variants/t-echo/variant.h

@@ -139,6 +139,7 @@ External serial flash WP25R1635FZUIL0
 // Not really an E22 but TTGO seems to be trying to clone that
 #define SX126X_DIO2_AS_RF_SWITCH
 #define SX126X_DIO3_TCXO_VOLTAGE 1.8
+#define TCXO_OPTIONAL
 // Internally the TTGO module hooks the SX1262-DIO2 in to control the TX/RX switch (which is the default for the sx1262interface
 // code)
 
@@ -214,7 +215,7 @@ External serial flash WP25R1635FZUIL0
 #define VBAT_AR_INTERNAL AR_INTERNAL_3_0
 #define ADC_MULTIPLIER (2.0F)
 
-#define NO_EXT_GPIO 1
+// #define NO_EXT_GPIO 1
 
 #define HAS_RTC 1