meson: Rename platform directory to amlogic

Meson is the internal code name for the SoC family. The correct name for
the platform should be Amlogic. Change the name of the platform
directory.

Signed-off-by: Carlo Caione <ccaione@baylibre.com>
Change-Id: Icc140e1ea137f12117acbf64c7dcb1a8b66b345d
diff --git a/.gitignore b/.gitignore
index 6b1e057..2abfffb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -22,7 +22,7 @@
 tools/cert_create/cert_create
 tools/cert_create/cert_create.exe
 tools/marvell/doimage/doimage
-tools/meson/doimage
+tools/amlogic/doimage
 tools/stm32image/*.o
 tools/stm32image/stm32image
 tools/stm32image/stm32image.exe