fix the syntax error of drv_spi.c in lpc55sxx.

bsp/lpc55sxx/Libraries/drivers/drv_spi.c

@@ -29,7 +29,7 @@
 #endif
 
 struct lpc_spi
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+{
     SPI_Type *base;
     struct rt_spi_configuration *cfg;
     SYSCON_RSTn_t spi_rst;