wasm-sdk: fix setting rodata and bss section variables

[yunwei37]

Description

Fix setting rodata and bss section variables:

$ sudo /home/yunwei/wasm-bpf/build/bin/Release/wasm-bpf /home/yunwei/wasm-bpf/examples/bootstrap/bootstrap.wasm -d 100
TIME     EVENT COMM             PID     PPID    FILENAME/EXIT CODE
18:32:41 EXIT  sleep            106551  106545  [0] (1001ms)
18:32:41 EXIT  cpuUsage.sh      106545  106544  [0] (1016ms)
18:32:41 EXIT  sh               106544  1997    [0] (1016ms)
18:32:46 EXIT  sleep            106572  106566  [0] (1001ms)
18:32:46 EXIT  cpuUsage.sh      106566  106565  [0] (1020ms)
18:32:46 EXIT  sh               106565  1997    [0] (1021ms)
18:32:51 EXIT  sleep            106598  106591  [0] (1001ms)
18:32:51 EXIT  cpuUsage.sh      106591  106590  [0] (1011ms)
18:32:51 EXIT  sh               106590  1997    [0] (1012ms)

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update