m68k: Convert missed RODATA to RO_DATA

I missed two instances of the old RODATA macro (seems I was searching
for vmlinux.lds* not vmlinux*lds*). Fix both instances and double-check
the entire tree for other "RODATA" instances in linker scripts.

Fixes: c823182 ("vmlinux.lds.h: Replace RODATA with RO_DATA")
Reported-by: Geert Uytterhoeven <[email protected]>
Signed-off-by: Kees Cook <[email protected]>
Signed-off-by: Borislav Petkov <[email protected]>
Acked-by: Geert Uytterhoeven <[email protected]>
Cc: Heiko Carstens <[email protected]>
Cc: [email protected]
Cc: Sam Creasey <[email protected]>
Link: https://lkml.kernel.org/r/201911110920.5840E9AF1@keescook

Author: kees

arch/m68k/kernel/vmlinux-std.lds

@@ -31,7 +31,7 @@ SECTIONS
 
   _sdata = .;			/* Start of data section */
 
-  RODATA
+  RO_DATA(4096)
 
   RW_DATA(16, PAGE_SIZE, THREAD_SIZE)
 

arch/m68k/kernel/vmlinux-sun3.lds

@@ -24,7 +24,7 @@ SECTIONS
 	*(.fixup)
 	*(.gnu.warning)
 	} :text = 0x4e75
-	RODATA
+	RO_DATA(4096)
 
   _etext = .;			/* End of text section */