meta-nuvoton: u-boot-nuvoton: add u-boot-nuvoton 2021.04 recipe

Add for supporting customer whose still need to use u-boot v2021.04.

Customer can add this line into their include file to build it.
`PREFERRED_VERSION_u-boot-nuvoton ?= "2021.04%"`

Update u-boot-nuvoton 2021.04 srcrev bump b0b0222d39...1501268746

Brian Ma (1):
      dts: fix nuvoton-npcm845-pincfg.dtsi typo

Jim Liu (1):
      configs: rename arbel defconfig

Parvathi Bhogaraju (2):
      Invalidate RX buffer cache before freeing the DMA descriptor.
      net: designware: Pass all multicast frames in designware driver

Stanley Chu (6):
      cmd: cp: Fix boundary check for spi flash programming
      configs: arbel_evb: Use ARM timer as system tick counter
      crypto: npcm_sha: Support SHA512
      hash: Allow for SHA512 hardware implementations
      configs: arbel: Enable SHA512 HW acceleration
      crypto: npcm_sha: Support SHA384

Signed-off-by: Tim Lee <timlee660101@gmail.com>
Change-Id: I1b16685b1def6ed0d6dbc0f1cd0d055166ae95f0
diff --git a/meta-nuvoton/recipes-bsp/u-boot/u-boot-nuvoton_2021.04.bb b/meta-nuvoton/recipes-bsp/u-boot/u-boot-nuvoton_2021.04.bb
new file mode 100644
index 0000000..6ad140e
--- /dev/null
+++ b/meta-nuvoton/recipes-bsp/u-boot/u-boot-nuvoton_2021.04.bb
@@ -0,0 +1,10 @@
+DESCRIPTION = "U-boot for Nuvoton NPCM7xx/NPCM8xx Baseboard Management Controller"
+
+require u-boot-common-nuvoton_${PV}.inc
+require u-boot-nuvoton.inc
+
+PROVIDES += "u-boot"
+
+DEPENDS += "dtc-native"
+
+SRC_URI:append:df-phosphor-mmc = " file://u-boot-emmc.cfg"