package/fakeroot: fix glibc detection on patch for new wrappers

package/fakeroot: fix glibc detection on patch for new wrappers

Commit f45925a951318e9e53bead80b363e004301adc6f add the patch:

0003-libfakeroot.c-add-wrappers-for-new-glibc-2.33-symbol.patch

which allowed fakeroot to be compiled with GLIBC 2.33 or above.
However, this introduce a bug for building with a non-GLIBC based
toolchain as a GLIBC macro - __GLIBC_PREREQ - is used on the same line
as the detection of GLIBC.

Fix this by backporting the fix to this incorrect macro from upstream
commit:

https://salsa.debian.org/clint/fakeroot/-/commit/8090dffdad8fda86dccd47ce7a7db8840bdf7d7b

CC: Yann E. MORIN <yann.morin.1998@free.fr>
Signed-off-by: Ryan Barnett <ryanbarnett3@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>