Make checkpatch require Signed-off-by (#516)

* Make checkpatch require Signed-off-by

This will make it easier to send changes contributed here to mainline
OpenOCD.

(Intentionally not including the required line here to make sure I can't
just merge this.)

Change-Id: I089084d38f3e08859d62cf7eface405f37af4799

* Whitespace fix.

This PR isn't building on travis. Maybe because I only changed
.travis.yml. Here's a source change to force a build (hopefully).

Change-Id: I8a828fe1d56a1960bc4bfb91d3d2f3a0790ad571

* Can't check for signoff on sources alone.

Change-Id: I741a299b64bf14857a4e1807b254a7d270b2e466
Signed-off-by: Tim Newsome <tim@sifive.com>

* Actual whitespace fixes.

Why didn't this fail to build before?

Change-Id: I339c03c4ef96546dbef5f16e635921a4fdaf9b35
Signed-off-by: Tim Newsome <tim@sifive.com>

.travis.yml

@@ -58,6 +58,8 @@ matrix:
                       - binutils-mingw-w64-i686 gcc-mingw-w64-i686 g++-mingw-w64-i686 patchutils
 
 script:
+    # This is here for the signoff check.
+    - ./tools/checkpatch.sh
     # Ideally we'd diff back to where we either branched off OpenOCD or master,
     # or riscv. But that's tricky, and the default git clone only gets the last
     # 50 changes any case. Most merges won't consist of more than 40 changes,

src/target/riscv/batch.c

@@ -11,7 +11,7 @@
 #define get_field(reg, mask) (((reg) & (mask)) / ((mask) & ~((mask) << 1)))
 #define set_field(reg, mask, val) (((reg) & ~(mask)) | (((val) * ((mask) & ~((mask) << 1))) & (mask)))
 
-#define DTM_DMI_MAX_ADDRESS_LENGTH	((1<<DTM_DTMCS_ABITS_LENGTH)-1)
+#define DTM_DMI_MAX_ADDRESS_LENGTH	((1 << DTM_DTMCS_ABITS_LENGTH) - 1)
 #define DMI_SCAN_MAX_BIT_LENGTH (DTM_DMI_MAX_ADDRESS_LENGTH + DTM_DMI_DATA_LENGTH + DTM_DMI_OP_LENGTH)
 #define DMI_SCAN_BUF_SIZE (DIV_ROUND_UP(DMI_SCAN_MAX_BIT_LENGTH, 8))
 

src/target/riscv/encoding.h

@@ -49,8 +49,8 @@
 #define SSTATUS64_SD        0x8000000000000000
 
 #define SSTATUS_VS_MASK     (SSTATUS_SIE | SSTATUS_SPIE | \
-                             SSTATUS_SPP | SSTATUS_SUM | \
-                             SSTATUS_MXR | SSTATUS_UXL)
+							SSTATUS_SPP | SSTATUS_SUM | \
+							SSTATUS_MXR | SSTATUS_UXL)
 
 #define HSTATUS_VSXL        0x300000000
 #define HSTATUS_VTSR        0x00400000