source 'customization.cfg' earlier in 'install.sh' (#109)

source 'customization.cfg' before '_tkg_initscript' is run in
'install.sh'. Otherwise some variables set in 'customization.cfg' are
empty when '_tkg_initscript' is run and have to be supplied again on the
prompt.

install.sh

@@ -22,6 +22,8 @@ set -e
 _where=`pwd`
 srcdir="$_where"
 
+source customization.cfg
+
 source linux-tkg-config/prepare
 
 # Run init script that is also run in PKGBUILD, it will define some env vars that we will use
@@ -52,8 +54,6 @@ esac
 
 _cpu_opt_patch_link="https://raw.githubusercontent.com/graysky2/kernel_gcc_patch/master/enable_additional_cpu_optimizations_for_gcc_v10.1%2B_kernel_v${opt_ver}.patch"  
 
-source customization.cfg
-
 if [ "$1" != "install" ] && [ "$1" != "config" ] && [ "$1" != "uninstall-help" ]; then
   msg2 "Argument not recognised, options are:
         - config : shallow clones the linux ${_basekernel}.x git tree into the folder linux-${_basekernel}, then applies on it the extra patches and prepares the .config file