phy: miphy28lp: remove unused struct 'miphy_initval'

'miphy_initval' is unused since the original
commit 2c14e9be ("phy: miphy28lp: Provide support for the MiPHY28lp
Generic PHY").

Remove it.
Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Link: https://lore.kernel.org/r/20240527205844.165279-1-linux@treblig.orgSigned-off-by: Vinod Koul <vkoul@kernel.org>

drivers/phy/st/phy-miphy28lp.c

@@ -228,11 +228,6 @@ struct miphy28lp_dev {
 	int nphys;
 };
 
-struct miphy_initval {
-	u16 reg;
-	u16 val;
-};
-
 enum miphy_sata_gen { SATA_GEN1, SATA_GEN2, SATA_GEN3 };
 
 static char *PHY_TYPE_name[] = { "sata-up", "pcie-up", "", "usb3-up" };