Add MKS Robin E3P, improve LVGL UI (#19442)

platformio.ini

@@ -191,7 +191,7 @@ lib_deps           =
 # Feature Dependencies
 #
 [features]
-HAS_TFT_LVGL_UI         = lvgl=https://github.com/makerbase-mks/MKS-LittlevGL/archive/master.zip
+HAS_TFT_LVGL_UI         = lvgl=https://github.com/makerbase-mks/LVGL-6.1.1-MKS/archive/master.zip
                           src_filter=+<src/lcd/extui/lib/mks_ui>
                           extra_scripts=download_mks_assets.py
 HAS_TRINAMIC_CONFIG     = TMCStepper@~0.7.1
@@ -955,6 +955,22 @@ extra_scripts = ${common.extra_scripts}
 build_flags   = ${common_stm32f1.build_flags}
   -DDEBUG_LEVEL=0 -DSS_TIMER=4
 
+#
+# MKS Robin E3p (STM32F103VET6)
+#  - LVGL UI
+#
+[env:mks_robin_e3p]
+platform        = ${common_stm32f1.platform}
+extends         = common_stm32f1
+board           = genericSTM32F103VE
+platform_packages = tool-stm32duino
+extra_scripts   = ${common.extra_scripts}
+  buildroot/share/PlatformIO/scripts/mks_robin_e3p.py
+build_flags     = ${common_stm32f1.build_flags}
+  -DMCU_STM32F103VE -DSS_TIMER=4
+debug_tool      = jlink
+upload_protocol = jlink
+
 #
 # MKS Robin Lite/Lite2 (STM32F103RCT6)
 #