arch: xtensa: Fix 10.4 violations

Both operands of an operator in which the usual arithmetic
conversions are performed shall have the same essential
type category.

Signed-off-by: Flavio Ceolin <[email protected]>

Author: Flavio Ceolin

arch/xtensa/core/xtensa-asm2.c

@@ -230,5 +230,5 @@ int z_xtensa_irq_is_enabled(unsigned int irq)
 
 	__asm__ volatile("rsr.intenable %0" : "=r"(ie));
 
-	return (ie & (1 << irq)) != 0;
+	return (ie & (1 << irq)) != 0U;
 }