variant and maxium_size for ESPino board wasn't correct, fixed

Author: Rodmg

boards.txt

@@ -699,7 +699,7 @@ espino.name=ESPino
 espino.upload.tool=esptool
 espino.upload.speed=115200
 espino.upload.resetmethod=ck
-espino.upload.maximum_size=434160
+espino.upload.maximum_size=1044464
 espino.upload.maximum_data_size=81920
 espino.upload.wait_for_upload_port=true
 espino.serial.disableDTR=true
@@ -709,7 +709,7 @@ espino.build.mcu=esp8266
 espino.build.f_cpu=80000000L
 espino.build.board=ESP8266_ESP12
 espino.build.core=esp8266
-espino.build.variant=generic
+espino.build.variant=espino
 espino.build.flash_mode=qio
 espino.build.flash_size=4M
 espino.build.flash_freq=40