hal: renesas: ra: Remove const for p_phy_lsi_cfg_list

Remove const to allow changing the value at runtime for
``p_phy_lsi_cfg_list`` in ra/fsp/inc/instances/r_ether_phy.h

Signed-off-by: Khoa Nguyen <[email protected]>

Author: khoa-nguyen-18

drivers/ra/fsp/inc/instances/r_ether_phy.h

@@ -59,7 +59,7 @@ typedef struct st_ether_phy_extended_cfg
 {
     void (* p_target_init)(ether_phy_instance_ctrl_t * p_instance_ctrl);                                                 ///< Pointer to callback that is called to initialize the target.
     bool (* p_target_link_partner_ability_get)(ether_phy_instance_ctrl_t * p_instance_ctrl, uint32_t line_speed_duplex); ///< Pointer to callback that is called to get the link partner ability.
-    ether_phy_lsi_cfg_t const * p_phy_lsi_cfg_list[BSP_FEATURE_ETHER_NUM_CHANNELS];                                      ///< Pointer list of PHY LSI configurations.
+    ether_phy_lsi_cfg_t * p_phy_lsi_cfg_list[BSP_FEATURE_ETHER_NUM_CHANNELS];                                      ///< Pointer list of PHY LSI configurations.
     uint8_t default_phy_lsi_cfg_index;                                                                                   ///< Index of the default PHY LSI condiguration.
 } ether_phy_extended_cfg_t;