YUKAWA: bump up device/amlogic/yukawa to 493f2521335eff00dff228b6726c0ea6044906e3

This brings in, most notably, support for the TABLET launcher.

shortlog below:

Dean Wheatley (2):
      Use fixed volume for HDMI only devices
      Support device manifest overlays

Dmitry Shmidt (2):
      yukawa: Add neonkey sensorhub support
      yukawa: Accommodate any 5.x kernel

Elliott Hughes (1):
      Remove wifilogd.

Guillaume La Roque (7):
      bootloader: fix README
      yukawa: fix sdcard issue
      bootloader: script: fix generate script for khadas vim board
      bootloader: script: collect-script fix to support new branch
      bootloader: readme: add collect part info
      bootloader: fip_packages: update khadas fip packages
      bootloader: update to u-boot v2021.01

Inseob Kim (1):
      Fix build error due to default_prop access

Mattijs Korpershoek (6):
      yukawa: bootloader: add 1.7.2 update tool
      bootloader: swap names for sei610 variant
      bootloader: update to fix _ab flashing
      audio: add hdmi only audio_policy_configuration config
      yukawa: set AUDIO_DEFAULT_OUTPUT := hdmi for vim3{,l}
      yukawa: add TARGET_USE_TABLET_LAUNCHER build flag

Venkatarama NG. Avadhani (1):
      Remove duplicate include of atv overlay

Signed-off-by: Mattijs Korpershoek mkorpershoek@baylibre.com