[PATCH] mips: bcm63xx: add support for clk_set_parent()

[Randy Dunlap]

The MIPS BMC63XX subarch does not provide/support clk_set_parent().
This causes build errors in a few drivers, so add a simple implementation
of that function so that callers of it will build without errors.

Fixes these build errors:

ERROR: modpost: "clk_set_parent" [sound/soc/jz4740/snd-soc-jz4740-i2s.ko] undefined!
ERROR: modpost: "clk_set_parent" [sound/soc/atmel/snd-soc-atmel-i2s.ko] undefined!

Fixes: e7300d04bd08 ("MIPS: BCM63xx: Add support for the Broadcom BCM63xx family of SOCs." )
Signed-off-by: Randy Dunlap <rdunlap at infradead.org>
---
 arch/mips/bcm63xx/clk.c |    6 ++++++
 1 file changed, 6 insertions(+)

--- linux-next-20211224.orig/arch/mips/bcm63xx/clk.c
+++ linux-next-20211224/arch/mips/bcm63xx/clk.c
@@ -387,6 +387,12 @@ struct clk *clk_get_parent(struct clk *c
 }
 EXPORT_SYMBOL(clk_get_parent);
 
+int clk_set_parent(struct clk *clk, struct clk *parent)
+{
+	return 0;
+}
+EXPORT_SYMBOL(clk_set_parent);
+
 unsigned long clk_get_rate(struct clk *clk)
 {
 	if (!clk)