[PATCH] PPC32: Fix alignment problem with __ex_table and __bug_table.

The __start___ex_table and __start___bug_table symbols could end up
pointing a few bytes before the actual __ex_table and __bug_table
sections, if the preceding section had an odd length.  This led to
oopses in some situations.  Patch from Sam Ravnborg.

arch/ppc/kernel/vmlinux.lds.S

@@ -47,13 +47,17 @@ SECTIONS
 
   .fixup   : { *(.fixup) }
 
+	__ex_table : {
 		__start___ex_table = .;
-  __ex_table : { *(__ex_table) }
+		*(__ex_table)
 		__stop___ex_table = .;
+	}
 
+	__bug_table : {
 		__start___bug_table = .;
-  __bug_table : { *(__bug_table) }
+		*(__bug_table)
 		__stop___bug_table = .;
+	}
 
   /* Read-write section, merged into data segment: */
   . = ALIGN(4096);