journalctl: show boot id in the reboot context separator

Pinebook Pro's display brightness up & down keys do not work until the
keys are mapped to the corresponding codes.

Also, the sleep key is mapped to KEY_POWER code originally. This quirk
maps the sleep key to the KEY_SLEEP code.

This idea comes from the pinebookpro-post-install package [1] of Manjaro
ARM, which is the preloaded OS on Pinebook Pro.

[1]: 7ab1a134ea

hwdb.d/60-keyboard.hwdb

@@ -1395,6 +1395,16 @@ evdev:input:b0003v05A4p9735*
  KEYBOARD_KEY_c00bb=prog2        # Key labeled "pf2"
  KEYBOARD_KEY_c00b8=prog3        # Key labeled "pf3"
 
+###########################################################
+# Pine64
+###########################################################
+
+# Pinebook Pro
+evdev:input:b0003v258Ap001E*
+ KEYBOARD_KEY_700a5=brightnessdown
+ KEYBOARD_KEY_700a6=brightnessup
+ KEYBOARD_KEY_70066=sleep
+
 ###########################################################
 # Plantronics
 ###########################################################

src/journal/journalctl.c

@@ -2672,8 +2672,8 @@ int main(int argc, char *argv[]) {
                                 if (r >= 0) {
                                         if (previous_boot_id_valid &&
                                             !sd_id128_equal(boot_id, previous_boot_id))
-                                                printf("%s-- Reboot --%s\n",
+                                                printf("%s-- Boot "SD_ID128_FORMAT_STR" --%s\n",
-                                                       ansi_highlight(), ansi_normal());
+                                                       ansi_highlight(), SD_ID128_FORMAT_VAL(boot_id), ansi_normal());
 
                                         previous_boot_id = boot_id;
                                         previous_boot_id_valid = true;