Use $PWD instead of $(pwd) for consistency
Use $PWD instead of $(pwd) for consistency

Change the new baremetal all.sh tests to use $PWD rather than
calling pwd again directly.

Signed-off-by: David Horstmann <0386b5e8f8e5ea8a58d40026a5369df20e1c750d@arm.com>

Mbed-TLS/mbedtls,ARMmbed/mbedtls,ARMmbed/mbedtls,Mbed-TLS/mbedtls,Mbed-TLS/mbedtls,ARMmbed/mbedtls,Mbed-TLS/mbedtls,ARMmbed/mbedtls