hw-mgmt: kernel 6.12: Fix DPU boot_progress read issue

On a smart switch, the boot_progress variable of the DPUs should indicate the module boot status.
However, due to a driver issue, it is not being read correctly by hardware management.
Even when all DPUs are powered, boot_progress remains 0 (it should be 1).

Fix: Set the correct offset in the platform driver for this bit in the CPLD.

Bug: 4683681

Signed-off-by: Oleksandr Shamray <[email protected]>

Author: sholeksandr

recipes-kernel/linux/linux-6.12/0028-platform-mellanox-mlxreg-dpu-Add-initial-support-for.patch

@@ -259,7 +259,7 @@ index 00000000..277e4b8
 +	{
 +		.label = "boot_progress",
 +		.reg = MLXREG_DPU_REG_GP1_OFFSET,
-+		.mask = GENMASK(3, 0),
++		.bit = GENMASK(3, 0),
 +		.mode = 0444,
 +	},
 +	{