Add Linux i686 (32bit) architecture toolchain (#5586)

Fixes #5585

Author: earlephilhower

package/package_esp8266com_index.template.json

@@ -154,6 +154,13 @@
                      "checksum": "SHA-256:e30f25a19a78635000401b083b479e111d591bac20cfd89b1bfdf36a60e9ee20",
                      "size": "16466"
                   },
+                  {
+                     "host": "i686-pc-linux-gnu",
+                     "url": "https://github.com./earlephilhower/esp-quick-toolchain/releases/download/2.5.0-3/i686-linux-gnu.esptool-f80ae31.tar.gz",
+                     "archiveFileName": "i686-linux-gnu.esptool-f80ae31.tar.gz",
+                     "checksum": "SHA-256:fe632f4602d02b6a9425c5bf95074095cb6d3c57912168a0f6b796fddd8ce991",
+                     "size": "16543"
+                  },
                   {
                      "host": "x86_64-apple-darwin",
                      "url": "https://github.com./earlephilhower/esp-quick-toolchain/releases/download/2.5.0-3/x86_64-apple-darwin14.esptool-f80ae31.tar.gz",
@@ -202,6 +209,13 @@
                      "checksum": "SHA-256:38b9ccc3b286546b026fb8a29fb2bd8fdab32c4711816a1a3cb0f11250b5c541",
                      "size": "44935132"
                   },
+                  {
+                     "host": "i686-pc-linux-gnu",
+                     "url": "https://github.com./earlephilhower/esp-quick-toolchain/releases/download/2.5.0-3/i686-linux-gnu.xtensa-lx106-elf-1f24aeae.tar.gz",
+                     "archiveFileName": "i686-linux-gnu.xtensa-lx106-elf-1f24aeae.tar.gz",
+                     "checksum": "SHA-256:96b106fbc814155e92d1805d3227d36096b88d3d54cfcd885804a0e9cf5631d7",
+                     "size": "42500158"
+                  },
                   {
                      "host": "x86_64-apple-darwin",
                      "url": "https://github.com./earlephilhower/esp-quick-toolchain/releases/download/2.5.0-3/x86_64-apple-darwin14.xtensa-lx106-elf-20ed2b9c.tar.gz",
@@ -250,6 +264,13 @@
                      "checksum": "SHA-256:ec661fb02c2635ac722eaaedf0a0c35474c43c72008f0ceefffb19af2f739d15",
                      "size": "337874"
                   },
+                  {
+                     "host": "i686-pc-linux-gnu",
+                     "url": "https://github.com./earlephilhower/esp-quick-toolchain/releases/download/2.5.0-3/i686-linux-gnu.mkspiffs-7fefeac.tar.gz",
+                     "archiveFileName": "i686-linux-gnu.mkspiffs-7fefeac.tar.gz",
+                     "checksum": "SHA-256:d080b3b50ee00ac56b7204f8d08b95cd53872a2e09da590775ee631bcb279cad",
+                     "size": "54276"
+                  },
                   {
                      "host": "x86_64-apple-darwin",
                      "url": "https://github.com./earlephilhower/esp-quick-toolchain/releases/download/2.5.0-3/x86_64-apple-darwin14.mkspiffs-7fefeac.tar.gz",
@@ -278,4 +299,4 @@
          "name": "esp8266"
       }
    ]
-}
+}