arch/armv7-a: fix assert in up_cpu_resume() with common pause API

This patch fix the assert issue happened on product with
commit ("os/arch/armv7-a: add api to pause and resume all CPUs")
If signaling task is scheduled on the current CPU, then
we don't need to resume the other CPUS as we don't pause them before.

Signed-off-by: Neelkumar Patel <[email protected]>

os/arch/arm/src/armv7-a/arm_schedulesigaction.c

@@ -363,7 +363,9 @@ void up_schedule_sigaction(struct tcb_s *tcb, sig_deliver_t sigdeliver)
 
 				/* RESUME the other CPUs if they were PAUSED */
 
-				up_cpu_resume_all();
+				if (cpu != me) {
+					up_cpu_resume_all();
+				}
 			}
 		}