[LibOS] Correct RDTSC instruction drift with system clock more often

Signed-off-by: aneessahib <anees.a.sahib@intel.com>

Pal/src/host/Linux-SGX/db_misc.c

@@ -28,7 +28,11 @@
 #include "spinlock.h"
 #include "toml.h"
 
-#define TSC_REFINE_INIT_TIMEOUT_USECS 10000000
+/* The timeout of 50ms was found to be a safe TSC drift correction periodicity based on results
+ * from multiple systems. Any higher or lower could pose risks of negative time drift or
+ * performance hit respectively.
+ */
+#define TSC_REFINE_INIT_TIMEOUT_USECS 50000
 
 uint64_t g_tsc_hz = 0; /* TSC frequency for fast and accurate time ("invariant TSC" HW feature) */
 static uint64_t g_start_tsc = 0;