update/blobs: unify global variables

they all more or less use the same variables, so put
them all under include/blobutil.sh

Signed-off-by: Leah Rowe <leah@libreboot.org>

script/update/blobs/inject

@@ -7,38 +7,7 @@
 
 . "include/err.sh"
 . "include/defconfig.sh"
-
-sname=""
-archive=""
-_filetype=""
-rom=""
-board=""
-modifygbe=""
-new_mac=""
-release=""
-releasearchive=""
-
-cbdir="coreboot/default"
-cbcfgsdir="config/coreboot"
-ifdtool="cbutils/default/ifdtool"
-cbfstool="cbutils/default/cbfstool"
-nvmutil="util/nvmutil/nvm"
-boarddir=""
-pciromsdir="pciroms"
-
-CONFIG_HAVE_MRC=""
-CONFIG_HAVE_ME_BIN=""
-CONFIG_ME_BIN_PATH=""
-CONFIG_KBC1126_FIRMWARE=""
-CONFIG_KBC1126_FW1=""
-CONFIG_KBC1126_FW1_OFFSET=""
-CONFIG_KBC1126_FW2=""
-CONFIG_KBC1126_FW2_OFFSET=""
-CONFIG_VGA_BIOS_FILE=""
-CONFIG_VGA_BIOS_ID=""
-CONFIG_GBE_BIN_PATH=""
-CONFIG_INCLUDE_SMSC_SCH5545_EC_FW=""
-CONFIG_SMSC_SCH5545_EC_FW_FILE=""
+. "include/blobutil.sh"
 
 main()
 {