fix(nxp-sfp): shift gpio register offsets by 2

These registers are 32-bit registers. When accessing them using
pointers, when should explicitely divide the fixed offsets
GPDIR_REG_OFFSET and GPDAT_R

fix(nxp-sfp): shift gpio register offsets by 2

These registers are 32-bit registers. When accessing them using
pointers, when should explicitely divide the fixed offsets
GPDIR_REG_OFFSET and GPDAT_REG_OFFSET by 4 to land on the correct
address. While set_gpio_bit() did this correctly, clr_gpio_bit() did
not. Even though GPDIR_REG_OFFSET = 0x0, shift it as well for
consistency with GPDAT_REG_OFFSET.

Change-Id: I5b8787d8424f83462ad4bb0f2141370ca28eaf34
Signed-off-by: Antonin Godard <antoningodard@pm.me>

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refactor: moved drivers hdr files to include/drivers/nxp

NXP drivers header files are moved:
- from: drivers/nxp/<xx>/*.h
- to : include/drivers/nxp/<xx>/*.h

To accommodate these changes eac

refactor: moved drivers hdr files to include/drivers/nxp

NXP drivers header files are moved:
- from: drivers/nxp/<xx>/*.h
- to : include/drivers/nxp/<xx>/*.h

To accommodate these changes each drivers makefiles
drivers/nxp/<xx>/xx.mk, are updated.

Signed-off-by: Pankaj Gupta <pankaj.gupta@nxp.com>
Change-Id: I3979c509724d87e3d631a03dbafda1ee5ef07d21

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nxp: gpio driver support

NXP General Purpose Input/Output driver support for
NXP platforms.

Signed-off-by: Pankaj Gupta <pankaj.gupta@nxp.com>
Change-Id: I9a3574f1d5d12e4a65ff60f640d4e77e2defd6d4