src: Drop unused '#include <halt.h>'

Change-Id: Ie7afe77053a21bcf6a1bf314570f897d1791a620
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/31921
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/soc/mediatek/mt8183/include/soc/rtc.h

@@ -17,7 +17,6 @@
 #define SOC_MEDIATEK_MT8183_RTC_H
 
 #include <soc/rtc_common.h>
-#include <halt.h>
 
 /* RTC registers */
 enum {

src/soc/mediatek/mt8183/rtc.c

@@ -13,6 +13,7 @@
  * GNU General Public License for more details.
  */
 
+#include <halt.h>
 #include <soc/rtc_common.h>
 #include <soc/rtc.h>
 #include <soc/mt6358.h>