ARM: fix co-processor register typo

In the recent Spectre BHB patches, there was a typo that is only
exposed in certain configurations: mcr p15,0,XX,c7,r5,4 should have
been mcr p15,0,XX,c7,c5,4

Reported-by: kernel test robot <[email protected]>
Fixes: b9baf5c ("ARM: Spectre-BHB workaround")
Signed-off-by: Russell King (Oracle) <[email protected]>
Acked-by: Catalin Marinas <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

Author: Russell King (Oracle)

arch/arm/include/asm/assembler.h

@@ -113,7 +113,7 @@
 	.endm
 
 	.macro	isb, args
-	mcr	p15, 0, r0, c7, r5, 4
+	mcr	p15, 0, r0, c7, c5, 4
 	.endm
 #endif