clk: k210: Move the clint clock to under aclk

No other (real) clocks have the cpu clock as their parent; instead they are
children of aclk. Move the clint clock under aclk to match them.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
diff --git a/drivers/clk/kendryte/clk.c b/drivers/clk/kendryte/clk.c
index ab86533..5091f07 100644
--- a/drivers/clk/kendryte/clk.c
+++ b/drivers/clk/kendryte/clk.c
@@ -643,7 +643,7 @@
 
 	/* The MTIME register in CLINT runs at one 50th the CPU clock speed */
 	clk_dm(K210_CLK_CLINT,
-	       clk_register_fixed_factor(NULL, "clint", "cpu", 0, 1, 50));
+	       clk_register_fixed_factor(NULL, "clint", "aclk", 0, 1, 50));
 
 	return 0;
 }