i2c: designware_i2c Return -ETIMEDOUT for timeout errors

Change the return value for timeout errors in i2c-designware from 1 to
-ETIMEDOUT. Returning errors as negative values is standard practice in the
u-boot, which enhances error handling consistency across the codebase.

The current behavior can lead to silent errors when functions check for
negative return values to identify errors. For example, in
`dm_i2c_reg_read` from i2c-uclass.c, a timeout results in an uninitialized
value being returned, potentially causing unexpected behavior.

Cc: Heiko Schocher <[email protected]>
Cc: Tom Rini <[email protected]>
Cc: Wojciech Szamocki <[email protected]>
Signed-off-by: Wojciech Szamocki <[email protected]>
Reviewed-by: Heiko Schocher <[email protected]>

0 files changed, 0 insertions, 0 deletions