MdeModulePkg: Add PcdMaxPeiPerformanceLogEntries16 PROMPT&HELP STR to *.uni

MdeModulePkg: Add PcdMaxPeiPerformanceLogEntries16 PROMPT&HELP STR to *.uni

Commit 7c50b3434377cbb49ce4514ee31339000a5cadc0 introduced
PcdMaxPeiPerformanceLogEntries16 to support > 256 PEI performance log
entries, but its PROMPT&HELP STR were forgotten to be added into *.uni.

Commit 7c50b3434377cbb49ce4514ee31339000a5cadc0 also updated
PcdMaxPeiPerformanceLogEntries HELP STR.

This patch is to add PcdMaxPeiPerformanceLogEntries16 PROMPT&HELP STR and
update PcdMaxPeiPerformanceLogEntries HELP STR in *.uni.

Cc: Shumin Qiu <shumin.qiu@intel.com>
Cc: Cinnamon Shia <cinnamon.shia@hpe.com>
Cc: Feng Tian <feng.tian@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Shumin Qiu <shumin.qiu@intel.com>
Reviewed-by: Cinnamon Shia <cinnamon.shia@hpe.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>