powerpc/xive: Fix section mismatch warnings

Both xive_core_init() and xive_native_init() are called from and call
__init routines, so they should also be __init.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

arch/powerpc/sysdev/xive/common.c

@@ -1399,7 +1399,7 @@ void xive_shutdown(void)
 	xive_ops->shutdown();
 }
 
-bool xive_core_init(const struct xive_ops *ops, void __iomem *area, u32 offset,
+bool __init xive_core_init(const struct xive_ops *ops, void __iomem *area, u32 offset,
 			   u8 max_prio)
 {
 	xive_tima = area;

arch/powerpc/sysdev/xive/native.c

@@ -531,7 +531,7 @@ u32 xive_native_default_eq_shift(void)
 }
 EXPORT_SYMBOL_GPL(xive_native_default_eq_shift);
 
-bool xive_native_init(void)
+bool __init xive_native_init(void)
 {
 	struct device_node *np;
 	struct resource r;