bios_setting: Add a read handler
Tested:
```
~# echo -n "01234567" > /run/oem_bios_setting
~# ipmitool raw 0x2e 0x32 0x79 0x2b 0x00 0x18
79 2b 00 18 08 30 31 32 33 34 35 36 37
~# rm /run/oem_bios_setting
~# ipmitool raw 0x2e 0x32 0x79 0x2b 0x00 0x18
Unable to send RAW command (channel=0x0 netfn=0x2e lun=0x0 cmd=0x32 rsp=0xca): Cannot return number of requested data bytes
```
Signed-off-by: Brandon Kim <brandonkim@google.com>
Change-Id: Icde2de4799a751634f56a580351bf10254dd7e4f
diff --git a/meson.build b/meson.build
index b101757..4e07ddd 100644
--- a/meson.build
+++ b/meson.build
@@ -44,6 +44,7 @@
sys_lib = static_library(
'sys',
+ 'bios_setting.cpp',
'bm_instance.cpp',
'bmc_mode.cpp',
'cable.cpp',