clk: imx: pllv1: fix kernel-doc notation for struct clk_pllv1

Convert struct clk_pllv1 comments to kernel-doc notation and move them
below the MFN_* macros.

Fixes this kernel-doc warning:

drivers/clk/imx/clk-pllv1.c:12: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
    * pll v1

Fixes: 2af9e6d ("ARM i.MX: Add common clock support for pllv1")
Fixes: a594790 ("ARM: imx: pllv1: Fix PLL calculation for i.MX27")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kernel test robot <lkp@intel.com>
Cc: Abel Vesa <abel.vesa@nxp.com>
Cc: linux-clk@vger.kernel.org
Cc: linux-imx@nxp.com
Cc: Alexander Shiyan <shc_work@mail.ru>
Cc: Shawn Guo <shawn.guo@linaro.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Link: https://lore.kernel.org/r/20211115032607.28970-1-rdunlap@infradead.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

drivers/clk/imx/clk-pllv1.c

@@ -8,20 +8,19 @@
 
 #include "clk.h"
 
+#define MFN_BITS	(10)
+#define MFN_SIGN	(BIT(MFN_BITS - 1))
+#define MFN_MASK	(MFN_SIGN - 1)
+
 /**
- * pll v1
+ * struct clk_pllv1 - IMX PLLv1 clock descriptor
  *
- * @clk_hw	clock source
- * @parent	the parent clock name
- * @base	base address of pll registers
+ * @hw:		clock source
+ * @base:	base address of pll registers
+ * @type:	type of IMX_PLLV1
  *
  * PLL clock version 1, found on i.MX1/21/25/27/31/35
  */
-
-#define MFN_BITS	(10)
-#define MFN_SIGN	(BIT(MFN_BITS - 1))
-#define MFN_MASK	(MFN_SIGN - 1)
-
 struct clk_pllv1 {
 	struct clk_hw	hw;
 	void __iomem	*base;