clk: renesas: rzg2l: Add missing kerneldoc for resets

make W=1:

    drivers/clk/renesas/rzg2l-cpg.c:95: warning: Function parameter or member 'num_resets' not described in 'rzg2l_cpg_priv'

Add the missing kerneldoc for fields in struct rzg2l_cpg_priv and struct
rzg2l_cpg_info related to Module Resets.

Fixes: c3e67ad6 ("dt-bindings: clock: r9a07g044-cpg: Update clock/reset definitions")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Link: https://lore.kernel.org/r/39c2c5fd4232b6620a4a56dba4e2b0d61476ee36.1634646869.git.geert+renesas@glider.be

drivers/clk/renesas/rzg2l-cpg.c

@@ -74,6 +74,7 @@ struct sd_hw_data {
  * @clks: Array containing all Core and Module Clocks
  * @num_core_clks: Number of Core Clocks in clks[]
  * @num_mod_clks: Number of Module Clocks in clks[]
+ * @num_resets: Number of Module Resets in info->resets[]
  * @last_dt_core_clk: ID of the last Core Clock exported to DT
  * @notifiers: Notifier chain to save/restore clock state for system resume
  * @info: Pointer to platform data

drivers/clk/renesas/rzg2l-cpg.h

@@ -168,6 +168,9 @@ struct rzg2l_reset {
  * @num_mod_clks: Number of entries in mod_clks[]
  * @num_hw_mod_clks: Number of Module Clocks supported by the hardware
  *
+ * @resets: Array of Module Reset definitions
+ * @num_resets: Number of entries in resets[]
+ *
  * @crit_mod_clks: Array with Module Clock IDs of critical clocks that
  *                 should not be disabled without a knowledgeable driver
  * @num_crit_mod_clks: Number of entries in crit_mod_clks[]