Fix version displayed in UI (from /etc/version) (#27)

Resetting bitbake var to write the correct version to /etc/version

If  is not empty, either its value or the default from Poky will be written to /etc/version. By setting it empty, the build start time (matching the image filename) will be written instead.

Author: danielsheh02

conf/local.conf

@@ -35,6 +35,10 @@ DISTRO_FEATURES = "${DISTRO_FEATURES_DEFAULT} ${DISTRO_FEATURES_LIBC} smbfs zero
 #DISTRO_FEATURES += "ld-is-gold"
 #SELECTED_OPTIMIZATION = "-Os"
 
+# If `REPRODUCIBLE_TIMESTAMP_ROOTFS` is not empty, either its value or the default from Poky will be written to /etc/version. 
+# By setting it empty, the build start time (matching the image filename) will be written instead.
+REPRODUCIBLE_TIMESTAMP_ROOTFS = ""
+
 # classic way to extend image
 #CORE_IMAGE_EXTRA_INSTALL += "mono fsharp"
 #preferred way to add packages