FROMGIT: mmc: debugfs: Add debug fs error state entry for mmc driver

Add debug fs entry error state to query eMMC and SD card errors statistics.
If any errors occurred in eMMC and SD card driver level then
err_state value will be set to 1.

(cherry picked from commit 6ecf831d2cea999c2cc881b39b147cf8ee9e43ae
 https://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc.git devel)
Bug: 233007144
Link: https://lore.kernel.org/lkml/1652857340-6040-5-git-send-email-quic_c_sbhanu@quicinc.com/



Signed-off-by: Liangliang Lu <quic_luliang@quicinc.com>
Signed-off-by: Sayali Lokhande <quic_sayalil@quicinc.com>
Signed-off-by: Bao D. Nguyen <quic_nguyenb@quicinc.com>
Signed-off-by: Shaik Sajida Bhanu <quic_c_sbhanu@quicinc.com>
Change-Id: Ie4cf876dc02fb719d91a7d37c8c5ec3aa2df54ab