Fix GPS nav-solve phase seeding for cold PVT

soc/software/gps_system/header/gps/gps_nav_phase.h

@@ -0,0 +1,22 @@
+#ifndef GPS_NAV_PHASE_H
+#define GPS_NAV_PHASE_H
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#include "gps/gps_ip_defines.h"
+
+static inline bool gps_nav_phase_control_armed(uint32_t control)
+{
+	return ((control & (1u << GPS_TRCK_NAV_SOLVE_INTR_EN_POS)) != 0u) &&
+	       ((control & (1u << GPS_TRCK_NAV_SOLVE_FLAG_EN_POS)) != 0u);
+}
+
+static inline bool gps_nav_phase_preserve_seed_after_how(
+	bool previously_seeded,
+	uint32_t control)
+{
+	return previously_seeded && gps_nav_phase_control_armed(control);
+}
+
+#endif