firmware: allow screendump in bootloader

Enabled if target defines HAVE_BOOTLOADER_SCREENDUMP

Change-Id: Idc135ef81e55d0f3eb8e7d2763d455c6455cf8fd

firmware/SOURCES

@@ -286,7 +286,7 @@ font_cache.c
 font.c
 hangul.c
 lru.c
-#ifndef BOOTLOADER
+#ifdef HAVE_SCREENDUMP
 screendump.c
 #endif
 #if LCD_DEPTH == 1

firmware/export/config.h

@@ -1281,6 +1281,10 @@ Lyre prototype 1 */
 #endif /* SIMULATOR */
 #endif /* default SDL SW volume conditions */
 
+#if !defined(BOOTLOADER) || defined(HAVE_BOOTLOADER_SCREENDUMP)
+# define HAVE_SCREENDUMP
+#endif
+
 /* null audiohw setting macro for when codec header is included for reasons
    other than audio support */
 #define AUDIOHW_SETTING(name, us, nd, st, minv, maxv, defv, expr...)

firmware/export/screendump.h

@@ -52,12 +52,7 @@
 #define DUMP_BMP_LINESIZE ((LCD_WIDTH*3 + 3) & ~3)
 #endif
 
-#ifdef BOOTLOADER
-
-#define screen_dump() do { } while(0)
-#define remote_screen_dump() do { } while(0)
-
-#else /* !BOOTLOADER */
+#ifdef HAVE_SCREENDUMP
 
 /* Save a .BMP file containing the current screen contents. */
 void screen_dump(void);
@@ -69,6 +64,11 @@ void screen_dump_set_hook(void (*hook)(int fd));
 void remote_screen_dump(void);
 #endif
 
-#endif /* !BOOTLOADER */
+#else /* !HAVE_SCREENDUMP */
+
+#define screen_dump() do { } while(0)
+#define remote_screen_dump() do { } while(0)
+
+#endif /* HAVE_SCREENDUMP */
 
 #endif /* __SCREENDUMP_H__ */