riscv: CONFIG_SPL_FRAMEPOINTER must depend on CONFIG_SPL

The CONFIG_SPL_FRAMEPOINTER symbol is only relevant in SPL.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
Reviewed-by: Ben Dooks <ben.dooks@codethink.co.uk>
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index fa3b016..4e228a6 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -133,6 +133,7 @@
 
 config SPL_FRAMEPOINTER
 	bool "Build SPL with frame pointer for stack unwinding"
+	depends on SPL
 	help
 	  Choose this option to use the frame pointer so the stack can be
 	  unwound if needed. This is useful for tracing where faults came