ethtool: update to version 5.15

ethtool: update to version 5.15

cef54c4 Release version 5.15.
23beb39 update UAPI header copies
fd7db64 netlink: settings: Correct duplicate condition
88892ec Merge branch 'review/module-fixes-2-v2'
79cb4ab sff-8636: Remove extra blank lines
128e97c sff-8636: Convert if statement to switch-case
7ff603b sff-8636: Fix incorrect function name
86e9784 sff-8636: Remove incorrect comment
001aecd cmis: Correct comment
1bad83c cmis: Fix wrong define name
2c2fa88 cmis: Fix CLEI code parsing
d007b49 Merge branch 'review/module-fixes' into master
a7431bc netlink: eeprom: Fix compilation when pretty dump is disabled
d02409c ethtool: Fix compilation warning when pretty dump is disabled
2ddb1a1 netlink: eeprom: Fallback to IOCTL when a complete hex/raw dump is requested
7e153a7 cmis: Fix invalid memory access in IOCTL path
769a50e sff-8636: Fix parsing of Page 03h in IOCTL path

Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>