unix: add Linux block device ioctl types and constants

These types and constants are taken from hdreg.h, and will enable
querying and manipulation of block devices on Linux.

Fixes golang/go#24971

Change-Id: Iafe8f81ba7ab9f1e127743dab6a9fb1912874a5c
Reviewed-on: https://go-review.googlesource.com/108455
Run-TryBot: Matt Layher <mdlayher@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
diff --git a/unix/ztypes_linux_mipsle.go b/unix/ztypes_linux_mipsle.go
index b9e57eb..3682beb 100644
--- a/unix/ztypes_linux_mipsle.go
+++ b/unix/ztypes_linux_mipsle.go
@@ -1142,3 +1142,99 @@
 	_         uint32
 	Key       [80]uint8
 }
+
+type HDDriveCmdHdr struct {
+	Command uint8
+	Number  uint8
+	Feature uint8
+	Count   uint8
+}
+
+type HDGeometry struct {
+	Heads     uint8
+	Sectors   uint8
+	Cylinders uint16
+	Start     uint32
+}
+
+type HDDriveID struct {
+	Config         uint16
+	Cyls           uint16
+	Reserved2      uint16
+	Heads          uint16
+	Track_bytes    uint16
+	Sector_bytes   uint16
+	Sectors        uint16
+	Vendor0        uint16
+	Vendor1        uint16
+	Vendor2        uint16
+	Serial_no      [20]uint8
+	Buf_type       uint16
+	Buf_size       uint16
+	Ecc_bytes      uint16
+	Fw_rev         [8]uint8
+	Model          [40]uint8
+	Max_multsect   uint8
+	Vendor3        uint8
+	Dword_io       uint16
+	Vendor4        uint8
+	Capability     uint8
+	Reserved50     uint16
+	Vendor5        uint8
+	TPIO           uint8
+	Vendor6        uint8
+	TDMA           uint8
+	Field_valid    uint16
+	Cur_cyls       uint16
+	Cur_heads      uint16
+	Cur_sectors    uint16
+	Cur_capacity0  uint16
+	Cur_capacity1  uint16
+	Multsect       uint8
+	Multsect_valid uint8
+	Lba_capacity   uint32
+	Dma_1word      uint16
+	Dma_mword      uint16
+	Eide_pio_modes uint16
+	Eide_dma_min   uint16
+	Eide_dma_time  uint16
+	Eide_pio       uint16
+	Eide_pio_iordy uint16
+	Words69_70     [2]uint16
+	Words71_74     [4]uint16
+	Queue_depth    uint16
+	Words76_79     [4]uint16
+	Major_rev_num  uint16
+	Minor_rev_num  uint16
+	Command_set_1  uint16
+	Command_set_2  uint16
+	Cfsse          uint16
+	Cfs_enable_1   uint16
+	Cfs_enable_2   uint16
+	Csf_default    uint16
+	Dma_ultra      uint16
+	Trseuc         uint16
+	TrsEuc         uint16
+	CurAPMvalues   uint16
+	Mprc           uint16
+	Hw_config      uint16
+	Acoustic       uint16
+	Msrqs          uint16
+	Sxfert         uint16
+	Sal            uint16
+	Spg            uint32
+	Lba_capacity_2 uint64
+	Words104_125   [22]uint16
+	Last_lun       uint16
+	Word127        uint16
+	Dlf            uint16
+	Csfo           uint16
+	Words130_155   [26]uint16
+	Word156        uint16
+	Words157_159   [3]uint16
+	Cfa_power      uint16
+	Words161_175   [15]uint16
+	Words176_205   [30]uint16
+	Words206_254   [49]uint16
+	Integrity_word uint16
+}