ARM: tegra: fix section mismatch in tegra_pmc_parse_dt

tegra_pmc_parse_dt() references __initconst data. Fix it to be __init.
This matches its only usage; a call from tegra_pmc_init() which is
already __init. This fixes:

WARNING: vmlinux.o(.text.unlikely+0x580): Section mismatch in reference
from the function tegra_pmc_parse_dt() to the (unknown reference)
.init.rodata:(unknown)
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NOlof Johansson <olof@lixom.net>

arch/arm/mach-tegra/pmc.c

@@ -234,7 +234,7 @@ static const struct of_device_id matches[] __initconst = {
 	{ }
 };
 
-static void tegra_pmc_parse_dt(void)
+static void __init tegra_pmc_parse_dt(void)
 {
 	struct device_node *np;
 	u32 prop;