[PIO] patch for core 2.6.0 build env.

See platformio/platform-espressif8266#180

Author: TD-er

platformio.ini

@@ -152,7 +152,7 @@ platform                  = [email protected]
 build_flags               = ${esp82xx_2_5_x.build_flags}
 
 [core_2_6_0]
-platform                  = https://github.com/Jason2866/platform-espressif8266.git#Tasmota
+platform                  = https://github.com/Jason2866/platform-espressif8266.git#SDK22x_191105
 build_flags               = ${esp82xx_2_6_x.build_flags} -DARDUINO_ESP8266_RELEASE='"2.6.0-dev Jason2866"'
 
 [core_stage]
@@ -245,8 +245,8 @@ platform                  = ${core_2_5_2.platform}
 
 [beta_platform]
 build_unflags             =
-build_flags               = ${core_stage.build_flags} ${common.build_flags}
-platform                  = ${core_stage.platform}
+build_flags               = ${core_2_6_0.build_flags} ${common.build_flags}
+platform                  = ${core_2_6_0.platform}