For baseband drivers, the macros used to indicate the presence of a
particular driver were subtly different from that used in make. The make
values hand "PMD" before the individual driver name, while in meson it came
afterwards. Update meson to put the "PMD" part first.
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
drivers = ['null', 'turbo_sw', 'fpga_lte_fec']
-config_flag_fmt = 'RTE_LIBRTE_@0@_PMD'
+config_flag_fmt = 'RTE_LIBRTE_PMD_@0@'
driver_name_fmt = 'rte_pmd_@0@'