Added hotkeys to "Other" menu entries but only on the most "fail-safe" ones

config/grub/config/grub.cfg

@@ -267,8 +267,8 @@ menuentry 'Load MemTest86+  [m]' --hotkey='m' {
 }
 fi
 
-submenu 'Other' {
-	menuentry 'Enable default serial terminal' {
+submenu 'Other  [z]' --hotkey='z' {
+	menuentry 'Enable default serial terminal  [s]' --hotkey='s'  {
 		serial
 		terminal_input --append serial
 		terminal_output --append serial
@@ -283,16 +283,16 @@ submenu 'Other' {
 		terminal_output --append gfxterm
 		terminal_output --remove vga_text
 	}
-	menuentry 'Disable gfxterm' {
+	menuentry 'Disable gfxterm  [g]' --hotkey='g'  {
 		terminal_output --remove gfxterm
 		terminal_output --append vga_text
 	}
 
-	menuentry 'Enable spkmodem' {
+	menuentry 'Enable spkmodem  [a]' --hotkey='a' {
 		terminal_output --append spkmodem
 	}
 
-	menuentry 'Disable spkmodem' {
+	menuentry 'Disable spkmodem  [z]' --hotkey='z' {
 		terminal_output --remove spkmodem
 	}
 }
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