uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/tools/networking/i2p/i2p.patch

@@ -0,0 +1,43 @@
+diff --git a/installer/resources/i2prouter b/installer/resources/i2prouter
+index 365737d89..2ea14db3e 100644
+--- a/installer/resources/i2prouter
++++ b/installer/resources/i2prouter
+@@ -49,7 +49,7 @@ APP_LONG_NAME="I2P Service"
+ 
+ # gettext - we look for it in the path
+ # fallback to echo is below, we can't set it to echo here.
+-GETTEXT=$(which gettext > /dev/null 2>&1)
++GETTEXT=%gettext%
+ 
+ # Where to install the systemd service
+ SYSTEMD_SERVICE="/etc/systemd/system/${APP_NAME}.service"
+diff --git a/installer/resources/runplain.sh b/installer/resources/runplain.sh
+index eb4995dfe..0186cede3 100644
+--- a/installer/resources/runplain.sh
++++ b/installer/resources/runplain.sh
+@@ -25,7 +25,7 @@ CP=
+ 
+ # Try using the Java binary that I2P was installed with.
+ # If it's not found, try looking in the system PATH.
+-JAVA=$(which "%JAVA_HOME"/bin/java || which java)
++JAVA=%JAVA%
+ 
+ if [ -z $JAVA ] || [ ! -x $JAVA ]; then
+     echo "Error: Cannot find java." >&2
+@@ -44,15 +44,4 @@ if [ $(uname -s) = "Darwin" ]; then
+     export JAVA_TOOL_OPTIONS="-Djava.awt.headless=true"
+ fi
+ JAVAOPTS="${MAXMEMOPT} -Djava.net.preferIPv4Stack=${PREFERv4} -Djava.library.path=${I2P}:${I2P}/lib -Di2p.dir.base=${I2P} -DloggerFilenameOverride=logs/log-router-@.txt"
+-(
+-    nohup ${JAVA} -cp \"${CP}\" ${JAVAOPTS} net.i2p.router.RouterLaunch > /dev/null 2>&1
+-) &
+-PID=$!
+-
+-if [ ! -z $PID ] && kill -0 $PID > /dev/null 2>&1 ; then
+-    echo "I2P started [$PID]" >&2
+-    echo $PID > "${I2PTEMP}/router.pid"
+-else
+-    echo "I2P failed to start." >&2
+-    exit 1
+-fi
++exec ${JAVA} -cp \"${CP}\" ${JAVAOPTS} net.i2p.router.RouterLaunch