soc: intel_adsp: added casting for C++ compiler in soc.h

Header soc.h is included during C++ source file compilation
and required adding C++ casts as implicit casting from void*
is forbidden. Fixed minor warning comparing signed with unsigned
integer.

Signed-off-by: Andrey Borisovich <andrey.borisovich@intel.com>

soc/xtensa/intel_adsp/common/include/soc.h

@@ -136,12 +136,11 @@ static ALWAYS_INLINE void z_idelay(int n)
 /* memcopy used by boot loader */
 static ALWAYS_INLINE void bmemcpy(void *dest, void *src, size_t bytes)
 {
-	uint32_t *d = dest;
-	uint32_t *s = src;
-	int i;
+	uint32_t *d = (uint32_t *)dest;
+	uint32_t *s = (uint32_t *)src;
 
 	z_xtensa_cache_inv(src, bytes);
-	for (i = 0; i < (bytes >> 2); i++)
+	for (size_t i = 0; i < (bytes >> 2); i++)
 		d[i] = s[i];
 
 	z_xtensa_cache_flush(dest, bytes);
@@ -150,10 +149,9 @@ static ALWAYS_INLINE void bmemcpy(void *dest, void *src, size_t bytes)
 /* bzero used by bootloader */
 static ALWAYS_INLINE void bbzero(void *dest, size_t bytes)
 {
-	uint32_t *d = dest;
-	int i;
+	uint32_t *d = (uint32_t *)dest;
 
-	for (i = 0; i < (bytes >> 2); i++)
+	for (size_t i = 0; i < (bytes >> 2); i++)
 		d[i] = 0;
 
 	z_xtensa_cache_flush(dest, bytes);