soc/qualcomm/sc7180/qupv3_config.c: Add missing includes

Add <string.h> and <cbfs.h>

Change-Id: I7e66a3cbf50fa27b4f6be6885b324de90eddd387
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42343
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>

src/soc/qualcomm/sc7180/include/soc/qupv3_config.h

@@ -4,7 +4,6 @@
 #define _SC7180_QUPV3_CONFIG_H_
 
 #include <assert.h>
-#include <cbfs.h>
 #include <soc/clock.h>
 #include <soc/qcom_qup_se.h>
 

src/soc/qualcomm/sc7180/qupv3_config.c

@@ -1,5 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
+#include <cbfs.h>
+#include <string.h>
 #include <soc/qupv3_config.h>
 
 static struct elf_se_hdr *fw_list[SE_PROTOCOL_MAX];