Instruct yasm to compile position independent code on Android

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1965983002

Review-Url: https://codereview.chromium.org/1965983002

gyp/libjpeg-turbo.gyp

@@ -259,12 +259,14 @@
                 'yasm_flags': [
                   '-D__x86__',
                   '-DELF',
+                  '-DPIC',
                 ],
               }, {
                 'yasm_format': '-felf64',
                 'yasm_flags': [
                   '-D__x86_64__',
                   '-DELF',
+                  '-DPIC',
                 ],
               }],
             ],