Bump nix develop based docker image to v0.2.8

Add Dasharo EC build requirements

Signed-off-by: Thierry Laurion <insurgo@riseup.net>

Author: tlaurion

flake.nix

@@ -22,6 +22,7 @@
       deps = with pkgs; [
         # Core build utilities
         autoconf
+        avrdude  # Dasharo EC build
         automake
         bashInteractive
         coreutils #basic tools like ls, cp, mv, kill)
@@ -60,10 +61,13 @@
         patch
         perl
         pkg-config
+        pkgsCross.avr.buildPackages.gcc # Dasharo EC build
+        pkgsCross.avr.libcCross # Dasharo EC build
         procps #process tools like free, pidof, pkill, top, vmstat, watch, etc
         psmisc #process tools like killall, pstree, etc
         python3 # me_cleaner, coreboot
         rsync # coreboot
+        sdcc  # Dasharo EC build
         sharutils
         texinfo
         unzip