MIPS: JZ4740: Call jz4740_clock_init earlier

Call jz4740_clock_init before any uses of jz4740_clock_bdata occur. This
is in preparation for replacing uses of that struct with calls to
clk_get_rate, which will allow the clocks to be migrated towards common
clock framework & devicetree.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: linux-mips@linux-mips.org
Cc: Deng-Cheng Zhu <dengcheng.zhu@imgtec.com>
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/10148/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/include/asm/mach-jz4740/clock.h

@@ -20,6 +20,8 @@ enum jz4740_wait_mode {
 	JZ4740_WAIT_MODE_SLEEP,
 };
 
+int jz4740_clock_init(void);
+
 void jz4740_clock_set_wait_mode(enum jz4740_wait_mode mode);
 
 void jz4740_clock_udc_enable_auto_suspend(void);