net: phy: microchip_t1: depend on PTP_1588_CLOCK_OPTIONAL

When microchip_t1_phy is built in and phyptp is module
facing undefined reference issue. This get fixed when
microchip_t1_phy made dependent on PTP_1588_CLOCK_OPTIONAL.

Reported-by: kernel test robot <[email protected]>
Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]
Fixes: fa51199 ("net: phy: microchip_rds_ptp : Add rds ptp library for Microchip phys")
Signed-off-by: Divya Koppera <[email protected]>
Reviewed-by: Simon Horman <[email protected]>
Tested-by: Simon Horman <[email protected]> # build-tested
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Paolo Abeni <[email protected]>

Author: Divya-Koppera

drivers/net/phy/Kconfig

@@ -287,8 +287,8 @@ config MICROCHIP_PHY
 
 config MICROCHIP_T1_PHY
 	tristate "Microchip T1 PHYs"
-	select MICROCHIP_PHY_RDS_PTP if NETWORK_PHY_TIMESTAMPING && \
-				  PTP_1588_CLOCK_OPTIONAL
+	select MICROCHIP_PHY_RDS_PTP if NETWORK_PHY_TIMESTAMPING
+	depends on PTP_1588_CLOCK_OPTIONAL
 	help
 	  Supports the LAN8XXX PHYs.