[lld] Reorder cases in test to match comments (NFC)

The test added in 1487747 had a few
cases that were out of order compared to the comments. Reordered to
match.

Author: teresajohnson

lld/test/ELF/lto/devirt_vcall_vis_export_dynamic.ll

@@ -98,19 +98,19 @@
 ;; preemption, even without any options.
 
 ;; Index based WPD
-; RUN: opt -relocation-model=pic -o %t5.o %s
+; RUN: opt -relocation-model=pic --thinlto-bc -o %t5.o %s
 ; RUN: ld.lld %t5.o -o %t5.so -shared
 ; RUN: ld.lld %t5.o %t5.so -o %t5 -save-temps --lto-whole-program-visibility \
 ; RUN:   -mllvm -pass-remarks=. 2>&1 | FileCheck /dev/null --implicit-check-not single-impl --allow-empty
 
 ;; Hybrid WPD
-; RUN: opt -relocation-model=pic --thinlto-bc -o %t5.o %s
+; RUN: opt -relocation-model=pic --thinlto-bc --thinlto-split-lto-unit -o %t5.o %s
 ; RUN: ld.lld %t5.o -o %t5.so -shared
 ; RUN: ld.lld %t5.o %t5.so -o %t5 -save-temps --lto-whole-program-visibility \
 ; RUN:   -mllvm -pass-remarks=. 2>&1 | FileCheck /dev/null --implicit-check-not single-impl --allow-empty
 
 ;; Regular LTO WPD
-; RUN: opt -relocation-model=pic --thinlto-bc --thinlto-split-lto-unit -o %t5.o %s
+; RUN: opt -relocation-model=pic -o %t5.o %s
 ; RUN: ld.lld %t5.o -o %t5.so -shared
 ; RUN: ld.lld %t5.o %t5.so -o %t5 -save-temps --lto-whole-program-visibility \
 ; RUN:   -mllvm -pass-remarks=. 2>&1 | FileCheck /dev/null --implicit-check-not single-impl --allow-empty