core/cpu.c: current_radix_mode should be initialised to true

POWER9 boots in radix mode. This does not change much but would allow
a big endian radix OS to avoid a HID change when it boots. However it
is confusing and fragile to have this set the wrong way initially.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>

core/cpu.c

@@ -43,7 +43,7 @@ static bool sreset_enabled;
 static bool ipi_enabled;
 static bool pm_enabled;
 static bool current_hile_mode;
-static bool current_radix_mode;
+static bool current_radix_mode = true;
 static bool tm_suspend_enabled;
 
 unsigned long cpu_secondary_start __force_data = 0;