PR ld/15721
	* elf32-msp430.c (R_MSP430_10_PCREL): Use 10-bit source and
	destination masks.
	* R_MSP430_2X_PCREL: Likewise.
	* R_MSP430X_10_PCREL: Likewise.
	* R_MSP430X_2X_PCREL: Likewise.