media: atomisp: make util.c work with ISP2401 runtime detection

Don't hide those small functions behind ifdefs.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/staging/media/atomisp/pci/atomisp2/css2400/camera/util/interface/ia_css_util.h

@@ -74,7 +74,7 @@ enum ia_css_err ia_css_util_check_res(
     unsigned int width,
     unsigned int height);
 
-#ifdef ISP2401
+/* ISP2401 */
 /* @brief compare resolutions (less or equal)
  *
  * @param[in] a resolution
@@ -87,6 +87,7 @@ bool ia_css_util_res_leq(
     struct ia_css_resolution a,
     struct ia_css_resolution b);
 
+/* ISP2401 */
 /**
  * @brief Check if resolution is zero
  *
@@ -97,6 +98,7 @@ bool ia_css_util_res_leq(
 bool ia_css_util_resolution_is_zero(
     const struct ia_css_resolution resolution);
 
+/* ISP2401 */
 /**
  * @brief Check if resolution is even
  *
@@ -107,7 +109,6 @@ bool ia_css_util_resolution_is_zero(
 bool ia_css_util_resolution_is_even(
     const struct ia_css_resolution resolution);
 
-#endif
 /* @brief check width and height
  *
  * @param[in] stream_format

drivers/staging/media/atomisp/pci/atomisp2/css2400/camera/util/src/util.c

@@ -158,23 +158,24 @@ enum ia_css_err ia_css_util_check_res(unsigned int width, unsigned int height)
 	return IA_CSS_SUCCESS;
 }
 
-#ifdef ISP2401
+/* ISP2401 */
 bool ia_css_util_res_leq(struct ia_css_resolution a, struct ia_css_resolution b)
 {
 	return a.width <= b.width && a.height <= b.height;
 }
 
+/* ISP2401 */
 bool ia_css_util_resolution_is_zero(const struct ia_css_resolution resolution)
 {
 	return (resolution.width == 0) || (resolution.height == 0);
 }
 
+/* ISP2401 */
 bool ia_css_util_resolution_is_even(const struct ia_css_resolution resolution)
 {
 	return IS_EVEN(resolution.height) && IS_EVEN(resolution.width);
 }
 
-#endif
 bool ia_css_util_is_input_format_raw(enum atomisp_input_format format)
 {
 	return ((format == ATOMISP_INPUT_FORMAT_RAW_6) ||