arch/arm/armv7: Correct checkpatch errors

- Correct whitespace issues with files under arch/arm/armv7.
- Fix comments and remove unnecessary line continuations in mmu.c

Change-Id: I69d50030b07b1919555feca44967472922176a81
Signed-off-by: Logan Carlson <logancarlson@google.com>
Reviewed-on: https://review.coreboot.org/19996
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Martin Roth <martinroth@google.com>

src/arch/arm/armv7/cache.c

@@ -84,7 +84,7 @@ static void dcache_op_mva(void const *addr, size_t len, enum dcache_op op)
 
 	dsb();
 	while ((void *)line < addr + len) {
-		switch(op) {
+		switch (op) {
 		case OP_DCCIMVAC:
 			dccimvac(line);
 			break;

src/arch/arm/armv7/mmu.c

@@ -280,7 +280,7 @@ void mmu_init(void)
 		table[0] = ATTR_UNUSED;
 
 	if (CONFIG_ARM_LPAE) {
-		pte_t *const pgd_buff = (pte_t*)(_ttb + 16*KiB);
+		pte_t *const pgd_buff = (pte_t *)(_ttb + 16*KiB);
 		pte_t *pmd = ttb_buff;
 		int i;
 

src/arch/arm/armv7/thread.c

@@ -39,7 +39,7 @@ static inline uintptr_t push_stack(uintptr_t cur_stack, uintptr_t value)
 }
 
 void arch_prepare_thread(struct thread *t,
-                         void asmlinkage (*thread_entry)(void *), void *arg)
+			void asmlinkage(*thread_entry)(void *), void *arg)
 {
 	uintptr_t stack = t->stack_current;
 	int i;