mmc: debugfs: add card entry for quirks

This is useful to check if a quirk has been applied for the connected
mmc card.
Signed-off-by: Rouven Czerwinski <r.czerwinski@pengutronix.de>
Link: https://lore.kernel.org/r/20240326094215.212930-2-r.czerwinski@pengutronix.deSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/core/debugfs.c

@@ -389,6 +389,7 @@ void mmc_add_card_debugfs(struct mmc_card *card)
 	card->debugfs_root = root;
 
 	debugfs_create_x32("state", 0400, root, &card->state);
+	debugfs_create_x32("quirks", 0400, root, &card->quirks);
 }
 
 void mmc_remove_card_debugfs(struct mmc_card *card)