ice/ptp: Remove convert_art_to_tsc()

JIRA: https://issues.redhat.com/browse/RHEL-61639

commit d4bea54
Author: Thomas Gleixner <tglx@linutronix.de>
Date:   Mon May 13 16:08:08 2024 +0530

    ice/ptp: Remove convert_art_to_tsc()

    The core code now provides a mechanism to convert the ART base clock to the
    corresponding TSC value without requiring an architecture specific
    function.

    Replace the direct conversion by filling in the required data.

    No functional change intended.

    Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
    Signed-off-by: Lakshmi Sowjanya D <lakshmi.sowjanya.d@intel.com>
    Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
    Link: https://lore.kernel.org/r/20240513103813.5666-8-lakshmi.sowjanya.d@intel.com

Signed-off-by: Ivan Vecera <ivecera@redhat.com>

Author: ivecera

drivers/net/ethernet/intel/ice/ice_ptp.c

@@ -2218,7 +2218,8 @@ ice_ptp_get_syncdevicetime(ktime_t *device,
 			hh_ts_lo = rd32(hw, GLHH_ART_TIME_L);
 			hh_ts_hi = rd32(hw, GLHH_ART_TIME_H);
 			hh_ts = ((u64)hh_ts_hi << 32) | hh_ts_lo;
-			*system = convert_art_ns_to_tsc(hh_ts);
+			system->cycles = hh_ts;
+			system->cs_id = CSID_X86_ART;
 			/* Read Device source clock time */
 			hh_ts_lo = rd32(hw, GLTSYN_HHTIME_L(tmr_idx));
 			hh_ts_hi = rd32(hw, GLTSYN_HHTIME_H(tmr_idx));