mksh: add mkshrc when using TW_USE_TOOLBOX
Fixes broken shell prompt in Terminal and adb shell
Before: https://del.dog/7vphlkc
After: https://del.dog/vhkjgo8
Add as prebuilt with suffix "_twrp" to avoid conflict
with original mkshrc and rename via POST_INSTALL_CMD
Prebuilt version adjusts TMPDIR variable from
"/data/local/tmp" to "/tmp" for TWRP
Change-Id: I42a1b2a8c114f66dbe659c07485f1dfae8a5d314
diff --git a/etc/init.recovery.mksh.rc b/etc/init.recovery.mksh.rc
new file mode 100755
index 0000000..3afd946
--- /dev/null
+++ b/etc/init.recovery.mksh.rc
@@ -0,0 +1,2 @@
+on init
+ export ENV /etc/mkshrc