Retry command QMI_UIM_GET_CARD_STATUS during query_passwd_state if a
temporary error status has been detected.
This happens with a MC7430 modem when query_passwd_state is called just
after PIN is entered.
Password state and number of retries asked to modem using
QMI_UIM_GET_CARD_STATUS command rather than remembered after initial
QMI_UIM_GET_CARD_STATUS command.
Add read_imsi feature to qmimodem sim driver.
This is based on DMS service.
On MC7430, this is mandatory to be able to use this driver for GPRS
connection because reading IMSI via EF reads fails.