spi_sdcard: add CMD18 - CMD_READ_MULTIPLE_BLOCK (mamedev#8913)

* spi_sdcard: add CMD18 - CMD_READ_MULTIPLE_BLOCK and clean up state changes
imulilla · Dec 1, 2021 · 12b260e · 12b260e
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diff --git a/.gitignore b/.gitignore
@@ -42,6 +42,7 @@
 !/*.bdf
 !/LICENSE
 /.idea
+.vscode
 docs/build
 docs/source/_build
 regtests/chdman/temp