COMPMID-2826 Comply with DCL51-CPP

Rename all header guards to be compliant with DCL51-CPP

Change-Id: I47b09375bb1b8d39d80c275ce69a3f25fb385d75
Signed-off-by: Michalis Spyrou <micspy01@e123758.cambridge.arm.com>
Reviewed-on: https://review.mlplatform.org/c/2393
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
diff --git a/arm_compute/core/NEON/NESymm.h b/arm_compute/core/NEON/NESymm.h
index 8345e0b..9248409 100644
--- a/arm_compute/core/NEON/NESymm.h
+++ b/arm_compute/core/NEON/NESymm.h
@@ -21,8 +21,8 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-#ifndef __ARM_COMPUTE_NESYMM_H__
-#define __ARM_COMPUTE_NESYMM_H__
+#ifndef ARM_COMPUTE_NESYMM_H
+#define ARM_COMPUTE_NESYMM_H
 
 #include "arm_compute/core/NEON/NEMath.h"
 #include <arm_neon.h>
@@ -103,7 +103,7 @@
     if(result_shift < 0)
     {
         const int64_t in_64 = static_cast<int64_t>(in_value) * (1 << (-result_shift)) * static_cast<int64_t>(result_fixedpoint_multiplier);
-        in_value = static_cast<int32_t>((in_64 + (1 << 30)) >> 31);
+        in_value            = static_cast<int32_t>((in_64 + (1 << 30)) >> 31);
     }
     else
     {
@@ -231,4 +231,4 @@
 }
 
 } // namespace arm_compute
-#endif // __ARM_COMPUTE_NESYMM_H__
+#endif // ARM_COMPUTE_NESYMM_H