Update defconfig.common

Author: Jason2866

configs/defconfig.common

@@ -1,4 +1,3 @@
-CONFIG_IDF_EXPERIMENTAL_FEATURES=y
 CONFIG_AUTOSTART_ARDUINO=y
 # CONFIG_WS2812_LED_ENABLE is not set
 CONFIG_APP_BUILD_TYPE_APP_2NDBOOT=y
@@ -125,6 +124,7 @@ CONFIG_MBEDTLS_AES_C=y
 # CONFIG_MBEDTLS_BLOWFISH_C is not set
 # CONFIG_MBEDTLS_XTEA_C is not set
 # CONFIG_MBEDTLS_CCM_C is not set
+# CONFIG_MBEDTLS_GCM_C is not set
 # CONFIG_MBEDTLS_NIST_KW_C is not set
 # end of Symmetric Ciphers
 
@@ -173,7 +173,7 @@ CONFIG_MBEDTLS_HARDWARE_SHA=y
 CONFIG_MBEDTLS_ECP_C=y
 CONFIG_MBEDTLS_ECDH_C=y
 CONFIG_MBEDTLS_ECDSA_C=y
-# CONFIG_MBEDTLS_ECP_DP_SECP256R1_ENABLE is not set
+CONFIG_MBEDTLS_ECP_DP_SECP256R1_ENABLE=y
 # CONFIG_MBEDTLS_DHM_C is not set
 # CONFIG_MBEDTLS_ECJPAKE_C is not set
 # CONFIG_MBEDTLS_CLIENT_SSL_SESSION_TICKETS is not set