[jdk21u-dev] RFR: 8336343: Add more known sysroot library locations for ALSA

[Aleksey Shipilev]

Allows cleaner cross-builds without supplying `--with-alsa` for custom-generated sysroots, e.g. crosstool-ng ones. I have been running with this patch for 3+ weeks in 21u-dev builds, and there were no problems.

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Commit messages:
 - Backport 9e6e0a8f341389215f0db6b2260f2b16351f02be

Changes: https://git.openjdk.org/jdk21u-dev/pull/897/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=897&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8336343
  Stats: 19 lines in 1 file changed: 19 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/897.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/897/head:pull/897

PR: https://git.openjdk.org/jdk21u-dev/pull/897