arm64/Kconfig: Remove redundant 'if HAVE_FUNCTION_GRAPH_TRACER'

Since the commit 819e50e ("arm64: Add ftrace support"),
HAVE_FUNCTION_GRAPH_TRACER has always been enabled. Although a subsequent
commit 3646970 ("arm64: ftrace: Enable HAVE_FUNCTION_GRAPH_RETVAL")
redundantly added check on HAVE_FUNCTION_GRAPH_TRACER, while enabling the
config HAVE_FUNCTION_GRAPH_RETVAL. Let's just drop this redundant check.

Cc: Catalin Marinas <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: [email protected]
CC: [email protected]
Signed-off-by: Anshuman Khandual <[email protected]>
Acked-by: Mark Rutland <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Will Deacon <[email protected]>

Author: Anshuman Khandual

arch/arm64/Kconfig

@@ -211,8 +211,8 @@ config ARM64
 	select HAVE_FTRACE_MCOUNT_RECORD
 	select HAVE_FUNCTION_TRACER
 	select HAVE_FUNCTION_ERROR_INJECTION
-	select HAVE_FUNCTION_GRAPH_RETVAL if HAVE_FUNCTION_GRAPH_TRACER
 	select HAVE_FUNCTION_GRAPH_TRACER
+	select HAVE_FUNCTION_GRAPH_RETVAL
 	select HAVE_GCC_PLUGINS
 	select HAVE_HARDLOCKUP_DETECTOR_PERF if PERF_EVENTS && \
 		HW_PERF_EVENTS && HAVE_PERF_EVENTS_NMI