dev: gcdb: use post on command to add delay for SPI panel

Use post on command interface to add delay between frame transfer
to panel and backlight on panel command.

Change-Id: I7db8db664e60eb39c9fdc71752239a5a0fc08e59
Signed-off-by: Wenjun Zhang <wjzhan@codeaurora.org>
diff --git a/dev/gcdb/display/include/panel_st7789v2_qvga_spi_cmd.h b/dev/gcdb/display/include/panel_st7789v2_qvga_spi_cmd.h
index 869f536..614e21a 100644
--- a/dev/gcdb/display/include/panel_st7789v2_qvga_spi_cmd.h
+++ b/dev/gcdb/display/include/panel_st7789v2_qvga_spi_cmd.h
@@ -157,13 +157,14 @@
 	{0x0F, st7789v2_qvga_cmd_on_cmd12, 0x00, 0},
 	{0x0F, st7789v2_qvga_cmd_on_cmd13, 0x00, 0},
 	{0x01, st7789v2_qvga_cmd_on_cmd14, 0x00, 0},
-	{0x01, st7789v2_qvga_cmd_on_cmd15, 0x78, 0},
-	{0x05, st7789v2_qvga_cmd_on_cmd16, 0x00, 0},
-	{0x05, st7789v2_qvga_cmd_on_cmd17, 0x00, 0},
 	{0x01, st7789v2_qvga_cmd_on_cmd18, 0x00, 0},
+	{0x01, st7789v2_qvga_cmd_on_cmd15, 0x78, 1},
+	{0x05, st7789v2_qvga_cmd_on_cmd16, 0x00, 1},
+	{0x05, st7789v2_qvga_cmd_on_cmd17, 0x00, 1},
+	{0x01, st7789v2_qvga_cmd_on_cmd18, 0x00, 1},
 };
 
-#define ST7789v2_QVGA_CMD_ON_COMMAND 19
+#define ST7789v2_QVGA_CMD_ON_COMMAND 20
 
 
 static char st7789v2_qvga_cmdoff_cmd0[] = {