ARM: create .secure_stack section only for PSCI

Jon Master reports that QEMU refuses to load a U-Boot image built
with CONFIG_ARMV7_NONSEC, but without CONFIG_ARMV7_PSCI since
commit 5a3aae68c7 ("ARM: armv7: guard memory reserve for PSCI
with #ifdef CONFIG_ARMV7_PSCI").

It looks like only PSCI that needs the Secure stack, so move
the #ifdef to guard the whole of .secure_stack allocation in order
not to create the empty section.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reported-by: Jon Masters <jcm@redhat.com>
Link: http://patchwork.ozlabs.org/patch/664025/

arch/arm/cpu/u-boot.lds

@@ -74,6 +74,7 @@ SECTIONS
 		*(._secure.data)
 	}
 
+#ifdef CONFIG_ARMV7_PSCI
 	.secure_stack ALIGN(ADDR(.secure_data) + SIZEOF(.secure_data),
 			    CONSTANT(COMMONPAGESIZE)) (NOLOAD) :
 #ifdef __ARMV7_PSCI_STACK_IN_RAM
@@ -83,10 +84,10 @@ SECTIONS
 #endif
 	{
 		KEEP(*(.__secure_stack_start))
-#ifdef CONFIG_ARMV7_PSCI
+
 		/* Skip addreses for stack */
 		. = . + CONFIG_ARMV7_PSCI_NR_CPUS * ARM_PSCI_STACK_SIZE;
-#endif
+
 		/* Align end of stack section to page boundary */
 		. = ALIGN(CONSTANT(COMMONPAGESIZE));
 
@@ -107,6 +108,8 @@ SECTIONS
 #ifndef __ARMV7_PSCI_STACK_IN_RAM
 	/* Reset VMA but don't allocate space if we have secure SRAM */
 	. = LOADADDR(.secure_stack);
+#endif
+
 #endif
 
 	.__secure_end : AT(ADDR(.__secure_end)) {