ARM: 7546/1: cache-l2x0: add an optional register to save/restore

Tested-and-Reviewed-by: Yehuda Yitschak <yehuday@marvell.com>
Tested-and-Reviewed-by: Lior Amsalem <alior@marvell.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/include/asm/hardware/cache-l2x0.h

@@ -126,6 +126,7 @@ struct l2x0_regs {
 	unsigned long filter_end;
 	unsigned long prefetch_ctrl;
 	unsigned long pwr_ctrl;
+	unsigned long ctrl;
 };
 
 extern struct l2x0_regs l2x0_saved_regs;