ARC: boot: Non Master cpus only need to call EARLY_CPU_SETUP once

With prev fixes, all cores now start via common entry point @stext which
already calls EARLY_CPU_SETUP for all cores - so no need to invoke it
again

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
diff --git a/arch/arc/kernel/head.S b/arch/arc/kernel/head.S
index e7fa703..689dd86 100644
--- a/arch/arc/kernel/head.S
+++ b/arch/arc/kernel/head.S
@@ -120,8 +120,6 @@
 	.section .text, "ax",@progbits
 ENTRY(first_lines_of_secondary)
 
-	CPU_EARLY_SETUP
-
 	; setup per-cpu idle task as "current" on this CPU
 	ld	r0, [@secondary_idle_tsk]
 	SET_CURR_TASK_ON_CPU  r0, r1