Optional fields are set to -1 by various preprocessor macros. Make
sure the fields can actually store them.

Signed-off-by: Stefan Agner <ste...@agner.ch>
---
With that, sizes are back to normal:

   text    data     bss     dec     hex filename
   5406     180       1    5587    15d3 drivers/pinctrl/pinctrl-tegra-xusb.o
   5256      64       0    5320    14c8 drivers/pinctrl/pinctrl-tegra.o
  18072    1032       0   19104    4aa0 drivers/pinctrl/pinctrl-tegra114.o
  19214    1128       0   20342    4f76 drivers/pinctrl/pinctrl-tegra124.o
  18352     876       0   19228    4b1c drivers/pinctrl/pinctrl-tegra20.o
  24621    1068       0   25689    6459 drivers/pinctrl/pinctrl-tegra30.o

 drivers/pinctrl/pinctrl-tegra.h | 40 ++++++++++++++++++++--------------------
 1 file changed, 20 insertions(+), 20 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-tegra.h b/drivers/pinctrl/pinctrl-tegra.h
index 8d94d13..b8a82a3 100644
--- a/drivers/pinctrl/pinctrl-tegra.h
+++ b/drivers/pinctrl/pinctrl-tegra.h
@@ -139,26 +139,26 @@ struct tegra_pingroup {
        u32 pupd_bank:2;
        u32 tri_bank:2;
        u32 drv_bank:2;
-       u32 mux_bit:6;
-       u32 pupd_bit:6;
-       u32 tri_bit:6;
-       u32 einput_bit:6;
-       u32 odrain_bit:6;
-       u32 lock_bit:6;
-       u32 ioreset_bit:6;
-       u32 rcv_sel_bit:6;
-       u32 hsm_bit:6;
-       u32 schmitt_bit:6;
-       u32 lpmd_bit:6;
-       u32 drvdn_bit:6;
-       u32 drvup_bit:6;
-       u32 slwr_bit:6;
-       u32 slwf_bit:6;
-       u32 drvtype_bit:6;
-       u32 drvdn_width:6;
-       u32 drvup_width:6;
-       u32 slwr_width:6;
-       u32 slwf_width:6;
+       s32 mux_bit:6;
+       s32 pupd_bit:6;
+       s32 tri_bit:6;
+       s32 einput_bit:6;
+       s32 odrain_bit:6;
+       s32 lock_bit:6;
+       s32 ioreset_bit:6;
+       s32 rcv_sel_bit:6;
+       s32 hsm_bit:6;
+       s32 schmitt_bit:6;
+       s32 lpmd_bit:6;
+       s32 drvdn_bit:6;
+       s32 drvup_bit:6;
+       s32 slwr_bit:6;
+       s32 slwf_bit:6;
+       s32 drvtype_bit:6;
+       s32 drvdn_width:6;
+       s32 drvup_width:6;
+       s32 slwr_width:6;
+       s32 slwf_width:6;
 };
 
 /**
-- 
2.3.3

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