fault_inject: Don't select frame pointer with ARM unwind

CONFIG_FAULT_INJECTION_STACKTRACE_FILTER selects FRAME_POINTER.
If ARM_UNWIND is used for backtracing, the FRAME_POINTER
should not be selected.

Change-Id: I94f31fb4b241976e408838e4b5a4138c58c395b0
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 6a9e368..75b5d6b 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -1079,7 +1079,7 @@
 	depends on FAULT_INJECTION_DEBUG_FS && STACKTRACE_SUPPORT
 	depends on !X86_64
 	select STACKTRACE
-	select FRAME_POINTER if !PPC && !S390 && !MICROBLAZE
+	select FRAME_POINTER if !PPC && !S390 && !MICROBLAZE && !ARM_UNWIND
 	help
 	  Provide stacktrace filter for fault-injection capabilities