flash/nor/tcl: fix the flash name returned by 'flash list' command

flash/nor/tcl: fix the flash name returned by 'flash list' command

The 'flash list' command returns the driver name as flash name which seems
to be incorrect, the proposal is:
 - to fix this by returning the flash name
 - and add a new item 'driver' in the returned list

example:
before the change
> flash list
  {name stm32l4x base 134217728 size 0 bus_width 0 chip_width 0}
  {name stm32l4x base 201326592 size 0 bus_width 0 chip_width 0}
  {name stm32l4x base 200933376 size 0 bus_width 0 chip_width 0}

after the change
> flash list
  {name stm32l5x.flash_ns driver stm32l4x ...}
  {name stm32l5x.flash_alias_s driver stm32l4x ...}
  {name stm32l5x.otp driver stm32l4x ...}

Change-Id: I6d307b73c457549981a93c260be344378719af82
Signed-off-by: Tarek BOCHKATI <tarek.bouchkati@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6425
Reviewed-by: zapb <dev@zapb.de>
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
Tested-by: jenkins