phy: broadcom: sr-usb: fix Wvoid-pointer-to-enum-cast warning

'version' is an enum, thus cast of pointer on 64-bit compile test with
W=1 causes:

  phy-bcm-sr-usb.c:314:13: error: cast to smaller integer type 'enum bcm_usb_phy_version' from 'const void *' [-Werror,-Wvoid-pointer-to-enum-cast]
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230810111958.205705-3-krzysztof.kozlowski@linaro.orgSigned-off-by: Vinod Koul <vkoul@kernel.org>

drivers/phy/broadcom/phy-bcm-sr-usb.c

@@ -311,7 +311,7 @@ static int bcm_usb_phy_probe(struct platform_device *pdev)
 
 	of_id = of_match_node(bcm_usb_phy_of_match, dn);
 	if (of_id)
-		version = (enum bcm_usb_phy_version)of_id->data;
+		version = (uintptr_t)of_id->data;
 	else
 		return -ENODEV;