twister: rename in code

Some code had reference to sanitycheck, replace with twister.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>

arch/x86/core/x86_mmu.c

@@ -616,7 +616,7 @@ void z_x86_dump_page_tables(pentry_t *ptables)
 }
 
 /* Enable to dump out the kernel's page table right before main() starts,
- * sometimes useful for deep debugging. May overwhelm sanitycheck.
+ * sometimes useful for deep debugging. May overwhelm twister.
  */
 #define DUMP_PAGE_TABLES 0
 

kernel/fatal.c

@@ -100,8 +100,8 @@ void z_fatal_error(unsigned int reason, const z_arch_esf_t *esf)
 	unsigned int key = arch_irq_lock();
 	struct k_thread *thread = k_current_get();
 
-	/* sanitycheck looks for the "ZEPHYR FATAL ERROR" string, don't
-	 * change it without also updating sanitycheck
+	/* twister looks for the "ZEPHYR FATAL ERROR" string, don't
+	 * change it without also updating twister
 	 */
 	LOG_ERR(">>> ZEPHYR FATAL ERROR %d: %s on CPU %d", reason,
 		reason_to_str(reason), get_cpu());

subsys/debug/Kconfig

@@ -232,7 +232,7 @@ config FORCE_NO_ASSERT
 	bool "Force-disable no assertions"
 	help
 	  This boolean option disables Zephyr assertion testing even
-	  in circumstances (sanitycheck) where it is enabled via
+	  in circumstances (twister) where it is enabled via
 	  CFLAGS and not Kconfig.  Added solely to be able to work
 	  around compiler bugs for specific tests.