[display] Refactor to avoid implicit framebuffer allocation.

target/dartuinoP0/include/target/display/LS013B7DH06.h

Index: target/dartuinoP0/include/target/display/LS013B7DH06.h
diff --git a/target/dartuinoP0/include/target/display/LS013B7DH06.h b/target/dartuinoP0/include/target/display/LS013B7DH06.h
index e4cd964c8de09b060b8b0ede8350f219392d8200..1adbef2f57c44997166550328e96305a5c35d6d3 100644
--- a/target/dartuinoP0/include/target/display/LS013B7DH06.h
+++ b/target/dartuinoP0/include/target/display/LS013B7DH06.h
@@ -30,16 +30,11 @@
 #define MLCD_WIDTH  ((uint16_t)128)
 #define MLCD_HEIGHT ((uint16_t)128)
 
+// Ensure width corresponds to an integral number of bytes
+STATIC_ASSERT(((MLCD_WIDTH * 3) & 0x3) == 0);
+
 // 3 bits per pixel (1 for each of RBG) divided by 8 bits per byte.
 #define MLCD_BYTES_LINE  ((MLCD_WIDTH * 3) / 8)
+#define MLCD_FORMAT      (DISPLAY_FORMAT_RGB_111)
 
-#if 0
-// For gbskia
-#define FB_FORMAT               (DISPLAY_FORMAT_RGB_x111)
-#define FB_STRIDE               ((MLCD_WIDTH + 1) >> 1)
-#else
-#define FB_FORMAT               (DISPLAY_FORMAT_RGB_332)
-#define FB_STRIDE               (MLCD_WIDTH)
-#endif
-
-uint8_t lcd_get_line(uint8_t *framebuffer, uint8_t idx, uint8_t *result);
+uint8_t lcd_get_line(struct display_image *image, uint8_t idx, uint8_t *result);