sysfs: Fix readability-identifier-naming

```
/home/andrew/src/openbmc/phosphor-led-sysfs/build/../sysfs.cpp:30:3: error: invalid case style for function 'get_sysfs_attr' [readability-identifier-naming,-warnings-as-errors]
T get_sysfs_attr(const fs::path& path);
  ^~~~~~~~~~~~~~
  getSysfsAttr
/home/andrew/src/openbmc/phosphor-led-sysfs/build/../sysfs.cpp:49:6: error: invalid case style for function 'set_sysfs_attr' [readability-identifier-naming,-warnings-as-errors]
void set_sysfs_attr(const fs::path& path, const T& value)
     ^~~~~~~~~~~~~~
     setSysfsAttr
```

Change-Id: I1371768b35a65345a634c444d798f8dd8ba8f198
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
1 file changed