nommu: Do not set PRRR and NMRR in proc-v7.S if !MMU

ARMv7-R profile CPUs do not have these registers.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

arch/arm/mm/proc-v7.S

@@ -234,7 +234,6 @@ __v7_setup:
 	mcr	p15, 0, r4, c2, c0, 1		@ load TTB1
 	mov	r10, #0x1f			@ domains 0, 1 = manager
 	mcr	p15, 0, r10, c3, c0, 0		@ load domain access register
-#endif
 	/*
 	 * Memory region attributes with SCTLR.TRE=1
 	 *
@@ -267,6 +266,7 @@ __v7_setup:
 	ldr	r6, =0x40e040e0			@ NMRR
 	mcr	p15, 0, r5, c10, c2, 0		@ write PRRR
 	mcr	p15, 0, r6, c10, c2, 1		@ write NMRR
+#endif
 	adr	r5, v7_crval
 	ldmia	r5, {r5, r6}
 #ifdef CONFIG_CPU_ENDIAN_BE8