arch: nios2: 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/nios2/core/timing.c

@@ -61,5 +61,5 @@ uint64_t arch_timing_cycles_to_ns_avg(uint64_t cycles, uint32_t count)
 
 uint32_t arch_timing_freq_get_mhz(void)
 {
-	return (uint32_t)(arch_timing_freq_get() / 1000000);
+	return (uint32_t)(arch_timing_freq_get() / 1000000U);
 }