RealView: Allow access to the secure flash memory block on PB1176

This patch adds a Kconfig option for specifying whether Linux will only
be run in secure mode on the RealView PB1176 platform. Enabling it will
make the secure flash memory block (64MB @ 0x3c000000) available to
Linux.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
diff --git a/arch/arm/mach-realview/Kconfig b/arch/arm/mach-realview/Kconfig
index 368b58a..e09f540 100644
--- a/arch/arm/mach-realview/Kconfig
+++ b/arch/arm/mach-realview/Kconfig
@@ -48,6 +48,15 @@
 	help
 	  Include support for the ARM(R) RealView ARM1176 Platform Baseboard.
 
+config REALVIEW_PB1176_SECURE_FLASH
+	bool "Allow access to the secure flash memory block"
+	depends on MACH_REALVIEW_PB1176
+	default n
+	help
+	  Select this option if Linux will only run in secure mode on the
+	  RealView PB1176 platform and access to the secure flash memory
+	  block (64MB @ 0x3c000000) is required.
+
 config MACH_REALVIEW_PBA8
 	bool "Support RealView/PB-A8 platform"
 	select CPU_V7