ARM: pgtable: remove L2 cache flushes for SMP page table bring-up

The MMU is always configured to read page tables from the L2 cache
so there's little point flushing them out of the L2 cache back to
RAM.  Remove these flushes.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

arch/arm/kernel/smp.c

@@ -85,7 +85,6 @@ static inline void identity_mapping_add(pgd_t *pgd, unsigned long start,
 		pmd[1] = __pmd(addr | prot);
 		addr += SECTION_SIZE;
 		flush_pmd_entry(pmd);
-		outer_clean_range(__pa(pmd), __pa(pmd + 1));
 	}
 }
 
@@ -100,7 +99,6 @@ static inline void identity_mapping_del(pgd_t *pgd, unsigned long start,
 		pmd[0] = __pmd(0);
 		pmd[1] = __pmd(0);
 		clean_pmd_entry(pmd);
-		outer_clean_range(__pa(pmd), __pa(pmd + 1));
 	}
 }