workflows: install gperf via MSYS2 instead of choco

Move gperf installation from Chocolatey to MSYS2 package manager. The
choco install of gperf has been failing sporadically in CI, causing
random build failures. Since the build already runs in MSYS2 shell,
installing gperf there is simpler and more reliable.

And fix typo: x64_84 -> x86_64

Signed-off-by: Tomasz Leman <tomasz.m.leman@intel.com>

Author: tmleman

.github/workflows/zephyr.yml

@@ -417,13 +417,7 @@ jobs:
           choco install ninja
           ninja.exe --version
 
-      # Install GPERF for Windows
-      - name: Install gperf
-        run: |
-          choco install gperf
-          gperf --version
-
-      # MSYS2 provides gcc x64_86 toolchain & openssl
+      # MSYS2 provides gcc x86_64 toolchain, openssl & gperf
       # Installs in D:/a/_temp/msys64
       #
       # Note there is already C:/msys64/ provided by
@@ -433,7 +427,7 @@ jobs:
         uses: msys2/setup-msys2@cafece8e6baf9247cf9b1bf95097b0b983cc558d  # v2
         with:
           msystem: MSYS
-          install: gcc openssl-devel
+          install: gcc openssl-devel gperf
           path-type: inherit
 
       - name: Build