m68k: Remove unused "cursor home" code from debug console

The cursor home operation is unused and seems undesirable for logging.
Remove it. The console_not_cr label actually means "not line feed and
not carriage return either" so take the opportunity to replace it with
something less confusing. Rectify some inconsistent whitespace while
we're here.

Signed-off-by: Finn Thain <[email protected]>
Tested-by: Stan Johnson <[email protected]>
Reviewed-by: Geert Uytterhoeven <[email protected]>
Link: https://lore.kernel.org/ec2d443d3c3213028bbbab7c2e0382cd53db75fe.1743115195.git.fthain@linux-m68k.org
Signed-off-by: Geert Uytterhoeven <[email protected]>

Author: fthain

arch/m68k/kernel/head.S

@@ -3555,28 +3555,21 @@ func_start	console_putc,%a0/%a1/%d0-%d7
 	jra	L(console_exit)
 
 L(console_not_lf):
-	cmpib	#13,%d7
-	jne	L(console_not_cr)
+	cmpib	#'\r',%d7
+	jne	L(console_not_lf_not_cr)
 	clrl	%a0@(Lconsole_struct_cur_column)
 	jra	L(console_exit)
 
-L(console_not_cr):
-	cmpib	#1,%d7
-	jne	L(console_not_home)
-	clrl	%a0@(Lconsole_struct_cur_row)
-	clrl	%a0@(Lconsole_struct_cur_column)
-	jra	L(console_exit)
-
-/*
- *	At this point we know that the %d7 character is going to be
- *	rendered on the screen.  Register usage is -
- *		a0 = pointer to console globals
- *		a1 = font data
- *		d0 = cursor column
- *		d1 = cursor row to draw the character
- *		d7 = character number
- */
-L(console_not_home):
+	/*
+	 *	At this point we know that the %d7 character is going to be
+	 *	rendered on the screen.  Register usage is -
+	 *	a0 = pointer to console globals
+	 *	a1 = font data
+	 *	d0 = cursor column
+	 *	d1 = cursor row to draw the character
+	 *	d7 = character number
+	 */
+L(console_not_lf_not_cr):
 	movel	%a0@(Lconsole_struct_cur_column),%d0
 	movel	%a0@(Lconsole_struct_cur_row),%d1